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{{Short description|Type of cancer of lymph nodes}}
{{short description|Type of cancer of lymph nodes}}
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{{Use dmy dates|date=August 2019}}
{{engvarB|date=August 2019}}
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{{Infobox medical condition (new)
{{Infobox medical condition (new)
| name = Non-Hodgkin lymphoma
| name = Non-Hodgkin lymphoma
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<!-- Definition and symptoms -->
<!-- Definition and symptoms -->
'''Non-Hodgkin lymphoma''' ('''NHL''') is a group of [[hematological malignancy|blood cancers]] that includes all types of [[lymphoma]]s except [[Hodgkin lymphoma]]s.<ref name=NCI2016AdPt/> Symptoms include [[lymphadenopathy|enlarged lymph nodes]], [[fever]], [[night sweats]], weight loss and tiredness.<ref name=NCI2016AdPt/> Other symptoms may include [[bone pain]], chest pain or itchiness.<ref name=NCI2016AdPt/> Some forms are slow-growing, while others are fast-growing.<ref name=NCI2016AdPt>{{cite web|title=Adult Non-Hodgkin Lymphoma Treatment (PDQ®)–Patient Version|url=http://www.cancer.gov/types/lymphoma/patient/adult-nhl-treatment-pdq#section/all|website=NCI|access-date=13 August 2016|date=3 August 2016|url-status=live|archive-url=https://web.archive.org/web/20160816021510/http://www.cancer.gov/types/lymphoma/patient/adult-nhl-treatment-pdq#section/all|archive-date=16 August 2016|df=dmy}}</ref>
'''Non-Hodgkin lymphoma''' ('''NHL'''), also known as '''non-Hodgkin's lymphoma''', is a group of [[hematological malignancy|blood cancers]] that includes all types of [[lymphoma]]s except [[Hodgkin lymphoma]]s.<ref name=NCI2016AdPt/> Symptoms include [[lymphadenopathy|enlarged lymph nodes]], [[fever]], [[night sweats]], weight loss, and tiredness.<ref name=NCI2016AdPt/> Other symptoms may include [[bone pain]], chest pain, or itchiness.<ref name=NCI2016AdPt/> Some forms are slow-growing while others are fast-growing.<ref name=NCI2016AdPt>{{cite web|title=Adult Non-Hodgkin Lymphoma Treatment (PDQ®)–Patient Version|url=http://www.cancer.gov/types/lymphoma/patient/adult-nhl-treatment-pdq#section/all|website=NCI|access-date=13 August 2016|date=3 August 2016|url-status=live|archive-url=https://web.archive.org/web/20160816021510/http://www.cancer.gov/types/lymphoma/patient/adult-nhl-treatment-pdq#section/all|archive-date=16 August 2016|df=dmy}}</ref>


<!-- Cause and diagnosis -->
<!-- Cause and diagnosis -->
Lymphomas are types of [[cancer]] that develop from [[lymphocyte]]s, a type of [[white blood cell]].<ref name=SEER2016/> Risk factors include [[immunodeficiency|poor immune function]], [[autoimmune disease]]s, [[Helicobacter pylori infection|''Helicobacter pylori'' infection]], [[hepatitis C]], [[obesity]], and [[Epstein–Barr virus infection]].<ref name=NCI2016AdPt/><ref name=WCR2014Cp2>{{cite book|title=World Cancer Report 2014|date=2014|publisher=World Health Organization|isbn=978-9283204299|pages=Chapter 2.4, 2.6}}</ref> The [[World Health Organization]] <!-- (WHO) --> classifies lymphomas into five major groups, including one for Hodgkin lymphoma.<ref>{{cite web|title=Adult Non-Hodgkin Lymphoma Treatment (PDQ®)–Health Professional Version|url=http://www.cancer.gov/types/lymphoma/hp/adult-nhl-treatment-pdq#section/all|website=NCI|access-date=13 August 2016|date=1 June 2016|url-status=live|archive-url=https://web.archive.org/web/20160812081200/http://www.cancer.gov/types/lymphoma/hp/adult-nhl-treatment-pdq#section/all|archive-date=12 August 2016|df=dmy}}</ref> Within the four groups for NHL are over 60 specific types of lymphoma.<ref>{{cite web|title=Different types of non Hodgkin lymphoma|url=http://www.cancerresearchuk.org/about-cancer/type/non-hodgkins-lymphoma/about/types/the-most-common-types-of-non-hodgkins-lymphoma|website=Cancer Research UK|access-date=13 August 2016|url-status=live|archive-url=https://web.archive.org/web/20160814034909/http://www.cancerresearchuk.org/about-cancer/type/non-hodgkins-lymphoma/about/types/the-most-common-types-of-non-hodgkins-lymphoma|archive-date=14 August 2016|df=dmy}}</ref><ref>{{cite book|last1=Bope|first1=Edward T.|last2=Kellerman|first2=Rick D. | name-list-style = vanc |title=Conn's Current Therapy 2016|date=2015|publisher=Elsevier Health Sciences|isbn=9780323355353|page=878|url=https://books.google.com/books?id=_x_mCgAAQBAJ&pg=PT914|language=en|url-status=live|archive-url=https://web.archive.org/web/20170910182735/https://books.google.com/books?id=_x_mCgAAQBAJ&pg=PT914|archive-date=10 September 2017|df=dmy}}</ref> Diagnosis is by [[bone marrow biopsy|examination of a bone marrow]] or [[lymph node biopsy]].<ref name=NCI2016AdPt/> [[Medical imaging]] is done to help with [[cancer staging]].<ref name=NCI2016AdPt/>
Lymphomas are types of [[cancer]] that develop from [[lymphocyte]]s, a type of [[white blood cell]].<ref name=SEER2016/> Risk factors include [[immunodeficiency|poor immune function]], [[autoimmune disease]]s, [[Helicobacter pylori infection|''Helicobacter pylori'' infection]], [[hepatitis C]], [[obesity]], and [[Epstein–Barr virus infection]].<ref name=NCI2016AdPt/><ref name=WCR2014Cp2>{{cite book|title=World Cancer Report 2014|date=2014|publisher=World Health Organization|isbn=978-92-832-0429-9|pages=Chapter 2.4, 2.6}}</ref> The [[World Health Organization]] <!-- (WHO) --> classifies lymphomas into five major groups, including one for Hodgkin lymphoma.<ref>{{cite web|title=Adult Non-Hodgkin Lymphoma Treatment (PDQ®)–Health Professional Version|url=http://www.cancer.gov/types/lymphoma/hp/adult-nhl-treatment-pdq#section/all|website=NCI|access-date=13 August 2016|date=1 June 2016|url-status=live|archive-url=https://web.archive.org/web/20160812081200/http://www.cancer.gov/types/lymphoma/hp/adult-nhl-treatment-pdq#section/all|archive-date=12 August 2016|df=dmy}}</ref> Within the four groups for NHL are over 60 specific types of lymphoma.<ref>{{cite web|title=Different types of non Hodgkin lymphoma|url=http://www.cancerresearchuk.org/about-cancer/type/non-hodgkins-lymphoma/about/types/the-most-common-types-of-non-hodgkins-lymphoma|website=Cancer Research UK|access-date=13 August 2016|url-status=live|archive-url=https://web.archive.org/web/20160814034909/http://www.cancerresearchuk.org/about-cancer/type/non-hodgkins-lymphoma/about/types/the-most-common-types-of-non-hodgkins-lymphoma|archive-date=14 August 2016|df=dmy}}</ref><ref>{{cite book|last1=Bope|first1=Edward T.|last2=Kellerman|first2=Rick D. |title=Conn's Current Therapy 2016|date=2015|publisher=Elsevier Health Sciences|isbn=978-0-323-35535-3|page=878|url=https://books.google.com/books?id=_x_mCgAAQBAJ&pg=PT914|language=en|url-status=live|archive-url=https://web.archive.org/web/20170910182735/https://books.google.com/books?id=_x_mCgAAQBAJ&pg=PT914|archive-date=10 September 2017|df=dmy}}</ref> Diagnosis is by [[bone marrow biopsy|examination of a bone marrow]] or [[lymph node biopsy]].<ref name=NCI2016AdPt/> [[Medical imaging]] is done to help with [[cancer staging]].<ref name=NCI2016AdPt/>


<!-- Treatment -->
<!-- Treatment -->
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<!-- Epidemiology and prognosis -->
<!-- Epidemiology and prognosis -->
In 2015, about 4.3 million people had non-Hodgkin lymphoma, and 231,400 died.<ref name=GBD2015Pre>{{cite journal|author=GBD 2015 Mortality and Causes of Death Collaborators|title=Global, regional, and national incidence, prevalence, and years lived with disability for 310 diseases and injuries, 1990–2015: a systematic analysis for the Global Burden of Disease Study 2015|journal=Lancet|date=8 October 2016|volume=388|issue=10053|pages=1545–1602|pmid=27733282|doi=10.1016/S0140-6736(16)31678-6|pmc=5055577}}</ref><ref name=GBD2015De>{{cite journal|author=GBD 2015 Mortality and Causes of Death Collaborators|title=Global, regional, and national life expectancy, all-cause mortality, and cause-specific mortality for 249 causes of death, 1980–2015: a systematic analysis for the Global Burden of Disease Study 2015|journal=Lancet|date=8 October 2016|volume=388|issue=10053|pages=1459–1544|pmid=27733281|doi=10.1016/s0140-6736(16)31012-1|pmc=5388903}}</ref> In the United States, 2.1% of people are affected at some point in their life.<ref name=SEER2016/> The most common age of diagnosis is between 65 and 75 years old.<ref name=SEER2016/> The [[five-year survival rate]] in the United States is 71%.<ref name=SEER2016>{{cite web|title=SEER Stat Fact Sheets: Non-Hodgkin Lymphoma|url=http://seer.cancer.gov/statfacts/html/nhl.html|website=NCI|access-date=13 August 2016|date=April 2016|url-status=live|archive-url=https://web.archive.org/web/20140706125600/http://www.seer.cancer.gov/statfacts/html/nhl.html|archive-date=6 July 2014|df=dmy}}</ref>
In 2015, about 4.3 million people had non-Hodgkin lymphoma, and 231,400 (5.4%) died.<ref name=GBD2015Pre>{{cite journal|author=GBD 2015 Mortality and Causes of Death Collaborators|title=Global, regional, and national incidence, prevalence, and years lived with disability for 310 diseases and injuries, 1990–2015: a systematic analysis for the Global Burden of Disease Study 2015|journal=Lancet|date=8 October 2016|volume=388|issue=10053|pages=1545–1602|pmid=27733282|doi=10.1016/S0140-6736(16)31678-6|pmc=5055577}}</ref><ref name=GBD2015De>{{cite journal|author=GBD 2015 Mortality and Causes of Death Collaborators|title=Global, regional, and national life expectancy, all-cause mortality, and cause-specific mortality for 249 causes of death, 1980–2015: a systematic analysis for the Global Burden of Disease Study 2015|journal=Lancet|date=8 October 2016|volume=388|issue=10053|pages=1459–1544|pmid=27733281|doi=10.1016/s0140-6736(16)31012-1|pmc=5388903}}</ref> In the United States, 2.1% of people are affected at some point in their life.<ref name=SEER2016/> The most common age of diagnosis is between 65 and 75 years old.<ref name=SEER2016/> The [[five-year survival rate]] in the United States is 71%.<ref name=SEER2016>{{cite web|title=SEER Stat Fact Sheets: Non-Hodgkin Lymphoma|url=http://seer.cancer.gov/statfacts/html/nhl.html|website=NCI|access-date=13 August 2016|date=April 2016|url-status=live|archive-url=https://web.archive.org/web/20140706125600/http://www.seer.cancer.gov/statfacts/html/nhl.html|archive-date=6 July 2014|df=dmy}}</ref>


==Signs and symptoms==
==Signs and symptoms==
The signs and symptoms of non-Hodgkin lymphoma vary depending upon its location within the body. Symptoms include [[lymphadenopathy|enlarged lymph nodes]], [[fever]], [[night sweats]], weight loss, and tiredness.<!-- <ref name=NCI2016AdPt/> --> Other symptoms may include bone pain, chest pain, or itchiness.<!-- <ref name=NCI2016AdPt/> --> Some forms are slow growing, while others are fast growing.<ref name=NCI2016AdPt/> Enlarged lymph nodes may cause lumps to be felt under the skin when they are close to the surface of the body. Lymphomas in the skin may also result in lumps, which are commonly itchy, red, or purple. Lymphomas in the brain can cause weakness, seizures, problems with thinking, and personality changes.{{medcn|date=February 2017}}
The signs and symptoms of non-Hodgkin lymphoma vary depending upon its location within the body. Symptoms include [[lymphadenopathy|enlarged lymph nodes]], [[fever]], [[night sweats]], weight loss, and tiredness.<!-- <ref name=NCI2016AdPt/> --> Other symptoms may include bone pain, chest pain, or itchiness.<!-- <ref name=NCI2016AdPt/> --> Some forms are slow growing, while others are fast growing.<ref name=NCI2016AdPt/> Enlarged lymph nodes may cause lumps to be felt under the skin when they are close to the surface of the body. Lymphomas in the skin may also result in lumps, which are commonly itchy, red, or purple. Lymphomas in the brain can cause weakness, seizures, problems with thinking, and personality changes.<ref>{{cite web| title=Non-Hodgkin Lymphoma|url=https://medlineplus.gov/ency/article/000581.htm|access-date=23 June 2022}}</ref>


While an association between non-Hodgkin lymphoma and [[endometriosis]] has been described,<ref>{{cite journal | vauthors = Audebert A | title = [Women with endometriosis: are they different from others?] | language = fr | journal = Gynécologie, Obstétrique & Fertilité | volume = 33 | issue = 4 | pages = 239–46 | date = April 2005 | pmid = 15894210 | doi = 10.1016/j.gyobfe.2005.03.010 }}</ref> these associations are tentative.<ref>{{cite journal | vauthors = Somigliana E, Vigano' P, Parazzini F, Stoppelli S, Giambattista E, Vercellini P | title = Association between endometriosis and cancer: a comprehensive review and a critical analysis of clinical and epidemiological evidence | journal = Gynecologic Oncology | volume = 101 | issue = 2 | pages = 331–41 | date = May 2006 | pmid = 16473398 | doi = 10.1016/j.ygyno.2005.11.033 }}</ref>
While an association between non-Hodgkin lymphoma and [[endometriosis]] has been described,<ref>{{cite journal | vauthors = Audebert A | title = [Women with endometriosis: are they different from others?] | language = fr | journal = Gynécologie, Obstétrique & Fertilité | volume = 33 | issue = 4 | pages = 239–46 | date = April 2005 | pmid = 15894210 | doi = 10.1016/j.gyobfe.2005.03.010 }}</ref> these associations are tentative.<ref>{{cite journal | vauthors = Somigliana E, Vigano' P, Parazzini F, Stoppelli S, Giambattista E, Vercellini P | title = Association between endometriosis and cancer: a comprehensive review and a critical analysis of clinical and epidemiological evidence | journal = Gynecologic Oncology | volume = 101 | issue = 2 | pages = 331–41 | date = May 2006 | pmid = 16473398 | doi = 10.1016/j.ygyno.2005.11.033 }}</ref>

==Diagnosis==
Tests for non-Hodgkin lymphoma include;
* Complete blood count (CBC).
* Blood chemistry studies.
* Hepatitis B and hepatitis C test.
* HIV test.
* CT scan (CAT scan).
* PET scan (positron emission tomography scan).
* Bone marrow aspiration and biopsy.

If cancer is found, the following tests may be done to study the cancer cells:
* Immunohistochemistry.
* Cytogenetic analysis.
* Immunophenotyping.

Other tests and procedures may be done depending on the signs and symptoms seen and where the cancer forms in the body.<ref>{{cite web | url=https://www.cancer.gov/types/lymphoma/patient/adult-nhl-treatment-pdq#:~:text=and%20treatment%20options.-,Non%2DHodgkin%20lymphoma%20is%20a%20disease%20in%20which%20malignant%20(cancer,body%20from%20infection%20and%20disease | title=Non-Hodgkin Lymphoma Treatment - NCI | date=24 November 2023 }}</ref><ref>{{cite web | url=https://www.nhs.uk/conditions/non-hodgkin-lymphoma/diagnosis/ | title=Non-Hodgkin lymphoma - Diagnosis | date=23 October 2017 }}</ref>


==Causes==
==Causes==
The many different forms of lymphoma probably have different causes. These possible causes and associations with at least some forms of NHL include:
The many different forms of lymphoma probably have different causes. These possible causes and associations with at least some forms of NHL include:
* Infectious agents:
* Infectious agents:
** [[Epstein–Barr virus]]: associated with [[Burkitt's lymphoma]], Hodgkin lymphoma, [[follicular dendritic cell sarcoma]], [[extranodal NK-T-cell lymphoma]] and [[Epstein Barr virus positive diffuse large B-cell lymphoma, not otherwise specified|diffuse large B-cell lymphoma]].<ref name="Maeda2009">{{cite journal|vauthors=Maeda E, Akahane M, Kiryu S, Kato N, Yoshikawa T, Hayashi N, Aoki S, Minami M, Uozaki H, Fukayama M, Ohtomo K|title=Spectrum of Epstein-Barr virus-related diseases: A pictorial review|journal=Japanese Journal of Radiology|volume=27|issue=1|pages=4–19|year=2009|pmid=19373526|doi=10.1007/s11604-008-0291-2|s2cid=6970917}}</ref>
** [[Epstein–Barr virus]]: associated with [[Burkitt's lymphoma]], [[follicular dendritic cell sarcoma]], [[extranodal NK-T-cell lymphoma]] and [[Epstein Barr virus positive diffuse large B-cell lymphoma, not otherwise specified|diffuse large B-cell lymphoma]].<ref name="Maeda2009">{{cite journal|vauthors=Maeda E, Akahane M, Kiryu S, Kato N, Yoshikawa T, Hayashi N, Aoki S, Minami M, Uozaki H, Fukayama M, Ohtomo K|title=Spectrum of Epstein-Barr virus-related diseases: A pictorial review|journal=Japanese Journal of Radiology|volume=27|issue=1|pages=4–19|year=2009|pmid=19373526|doi=10.1007/s11604-008-0291-2|s2cid=6970917}}</ref>
** [[Human T-cell leukemia virus]]: associated with [[adult T-cell lymphoma]].
** [[Human T-cell leukemia virus]]: associated with [[adult T-cell lymphoma]].
** ''[[Helicobacter pylori]]'': associated with [[gastric lymphoma]].
** ''[[Helicobacter pylori]]'': associated with [[gastric lymphoma]].
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** [[Hepatitis C virus]]: associated with [[splenic marginal zone lymphoma]], [[lymphoplasmacytic lymphoma]] and [[diffuse large B-cell lymphoma]].<ref name="Peveling-Oberhag">{{cite journal|vauthors=Peveling-Oberhag J, Arcaini L, Hansmann ML, Zeuzem S|title=Hepatitis C-associated B-cell non-Hodgkin lymphomas. Epidemiology, molecular signature and clinical management|journal=Journal of Hepatology|volume=59|issue=1|pages=169–177|year=2013|pmid=23542089|doi=10.1016/j.jhep.2013.03.018|doi-access=free}}</ref>
** [[Hepatitis C virus]]: associated with [[splenic marginal zone lymphoma]], [[lymphoplasmacytic lymphoma]] and [[diffuse large B-cell lymphoma]].<ref name="Peveling-Oberhag">{{cite journal|vauthors=Peveling-Oberhag J, Arcaini L, Hansmann ML, Zeuzem S|title=Hepatitis C-associated B-cell non-Hodgkin lymphomas. Epidemiology, molecular signature and clinical management|journal=Journal of Hepatology|volume=59|issue=1|pages=169–177|year=2013|pmid=23542089|doi=10.1016/j.jhep.2013.03.018|doi-access=free}}</ref>
** [[HIV]] infection.<ref name="PinzoneFiorica2012" />
** [[HIV]] infection.<ref name="PinzoneFiorica2012" />
* Some chemicals, like [[polychlorinated biphenyls]] (PCBs),<ref name="Kramer">{{cite journal|vauthors=Kramer S, Hikel SM, Adams K, Hinds D, Moon K|title=Current Status of the Epidemiologic Evidence Linking Polychlorinated Biphenyls and Non-Hodgkin Lymphoma, and the Role of Immune Dysregulation|journal=Environmental Health Perspectives|volume=120|issue=8|pages=1067–75|year=2012|pmid=22552995|pmc=3440083|doi=10.1289/ehp.1104652}}</ref><ref>{{cite journal|vauthors=Zani C, Toninelli G, Filisetti B, Donato F|title=Polychlorinated biphenyls and cancer: an epidemiological assessment|journal=J. Environ. Sci. Health C |volume=31|issue=2|pages=99–144|year=2013|pmid=23672403|doi=10.1080/10590501.2013.782174|s2cid=5294247}}</ref><ref name="Lauby-Secretan">{{cite journal|vauthors=Lauby-Secretan B, Loomis D, Grosse Y, El Ghissassi F, Bouvard V, Benbrahim-Tallaa L, Guha N, Baan R, Mattock H, Straif K|title=Carcinogenicity of polychlorinated biphenyls and polybrominated biphenyls|journal=Lancet Oncology|volume=14|issue=4|pages=287–288|year=2013|pmid=23499544|doi=10.1016/s1470-2045(13)70104-9|url=http://prodinra.inra.fr/ft/25BCE4BA-5EA4-4AA1-A446-23A01442B32E}}</ref> [[diphenylhydantoin]], [[dioxin]], and [[phenoxy herbicide]]s.
* Some chemicals, like [[polychlorinated biphenyls]] (PCBs),<ref name="Kramer">{{cite journal|vauthors=Kramer S, Hikel SM, Adams K, Hinds D, Moon K|title=Current Status of the Epidemiologic Evidence Linking Polychlorinated Biphenyls and Non-Hodgkin Lymphoma, and the Role of Immune Dysregulation|journal=Environmental Health Perspectives|volume=120|issue=8|pages=1067–75|year=2012|pmid=22552995|pmc=3440083|doi=10.1289/ehp.1104652}}</ref><ref>{{cite journal|vauthors=Zani C, Toninelli G, Filisetti B, Donato F|title=Polychlorinated biphenyls and cancer: an epidemiological assessment|journal=J. Environ. Sci. Health C |volume=31|issue=2|pages=99–144|year=2013|pmid=23672403|doi=10.1080/10590501.2013.782174|bibcode=2013JESHC..31...99Z |s2cid=5294247}}</ref><ref name="Lauby-Secretan">{{cite journal|vauthors=Lauby-Secretan B, Loomis D, Grosse Y, El Ghissassi F, Bouvard V, Benbrahim-Tallaa L, Guha N, Baan R, Mattock H, Straif K|title=Carcinogenicity of polychlorinated biphenyls and polybrominated biphenyls|journal=Lancet Oncology|volume=14|issue=4|pages=287–288|year=2013|pmid=23499544|doi=10.1016/s1470-2045(13)70104-9|url=http://prodinra.inra.fr/ft/25BCE4BA-5EA4-4AA1-A446-23A01442B32E}}</ref> [[diphenylhydantoin]], [[dioxin]], and [[phenoxy herbicide]]s.
* Medical treatments, like [[radiation therapy]] and [[chemotherapy]].
* Medical treatments, like [[radiation therapy]] and [[chemotherapy]].{{cn|date=August 2022}}
* Genetic diseases, like [[Klinefelter syndrome]], [[Chédiak–Higashi syndrome]], ataxia–telangiectasia syndrome.
* Genetic diseases, like [[Klinefelter syndrome]], [[Chédiak–Higashi syndrome]], ataxia–telangiectasia syndrome.{{cn|date=August 2022}}
* Autoimmune diseases, like [[Sjögren syndrome]], [[celiac disease]], [[rheumatoid arthritis]], and [[systemic lupus erythematosus]].<ref name="Tobias2015">{{Cite book|title=Cancer and its Management| vauthors = Tobias J, Hochhauser D |publisher=Wiley-Blackwell|year=2015|isbn=9781118468715|edition=7th}}</ref><ref name=Freedman>{{cite book|veditors=Kufe DW, Pollock RE, Weichselbaum RR, ((Bast RC Jr)), Gansler TS, Holland JF, ((Frei E III))|title=Holland-Frei Cancer Medicine|author1=Arnold S Freedman|author2=Lee M Nadler|chapter=Chapter 130: Non–Hodgkin's Lymphomas|edition=5th|publisher=B.C. Decker|location=Hamilton, Ont|year=2000|isbn=1-55009-113-1|chapter-url=https://www.ncbi.nlm.nih.gov/books/NBK20925/|url-status=live|archive-url=https://web.archive.org/web/20170910182735/https://www.ncbi.nlm.nih.gov/books/NBK20925/|archive-date=10 September 2017|df=dmy}}</ref>
* Autoimmune diseases, like [[Sjögren syndrome]], [[celiac disease]], [[rheumatoid arthritis]], and [[systemic lupus erythematosus]].<ref name="Tobias2015">{{cite book|title=Cancer and its Management| vauthors = Tobias J, Hochhauser D |publisher=Wiley-Blackwell|year=2015|isbn=978-1-118-46871-5|edition=7th}}</ref><ref name=Freedman>{{cite book|veditors=Kufe DW, Pollock RE, Weichselbaum RR, ((Bast RC Jr)), Gansler TS, Holland JF, ((Frei E III))|title=Holland-Frei Cancer Medicine|author1=Arnold S Freedman|author2=Lee M Nadler|chapter=Chapter 130: Non–Hodgkin's Lymphomas|edition=5th|publisher=B.C. Decker|location=Hamilton, Ont|year=2000|isbn=1-55009-113-1|chapter-url=https://www.ncbi.nlm.nih.gov/books/NBK20925/|url-status=live|archive-url=https://web.archive.org/web/20170910182735/https://www.ncbi.nlm.nih.gov/books/NBK20925/|archive-date=10 September 2017|df=dmy}}</ref>
* Bone trauma and microfractures associated with [[diffuse large B-cell lymphoma]] originating in [[bone marrow]].<ref>{{Cite journal|last1=Subik|first1=M. Kristina|last2=Herr|first2=Megan|last3=Hutchison|first3=Robert E.|last4=Kelly|first4=Jennifer|last5=Tyler|first5=Wakenda|last6=Merzianu|first6=Mihai|last7=Burack|first7=W. Richard|date=November 2014|title=A Highly Curable Lymphoma Occurs Preferentially in the Proximal Tibia of Young Patients|journal=Modern Pathology |volume=27|issue=11|pages=1430–1437|doi=10.1038/modpathol.2014.51|issn=0893-3952|pmc=4201907|pmid=24743213}}</ref><ref>{{Cite journal|last1=Stein|first1=M. E.|last2=Lewis|first2=D. C.|last3=Gershuny|first3=A. R.|last4=Quigley|first4=M. M.|last5=Zaidan|first5=J.|last6=Danieli|first6=N. Siegelmann|last7=Whelan|first7=J.|last8=Subramanian|first8=R.|date=April 2003|title=Trauma as an etiologic factor of primary bone lymphoma: a report of 4 cases|url=https://pubmed.ncbi.nlm.nih.gov/17472245/|journal=Journal of B.U.ON.|volume=8|issue=2|pages=163–166|issn=1107-0625|pmid=17472245}}</ref>
* Bone trauma and microfractures associated with [[diffuse large B-cell lymphoma]] originating in [[bone marrow]].<ref>{{cite journal|last1=Subik|first1=M. Kristina|last2=Herr|first2=Megan|last3=Hutchison|first3=Robert E.|last4=Kelly|first4=Jennifer|last5=Tyler|first5=Wakenda|last6=Merzianu|first6=Mihai|last7=Burack|first7=W. Richard|date=November 2014|title=A Highly Curable Lymphoma Occurs Preferentially in the Proximal Tibia of Young Patients|journal=Modern Pathology |volume=27|issue=11|pages=1430–1437|doi=10.1038/modpathol.2014.51|issn=0893-3952|pmc=4201907|pmid=24743213}}</ref><ref>{{cite journal|last1=Stein|first1=M. E.|last2=Lewis|first2=D. C.|last3=Gershuny|first3=A. R.|last4=Quigley|first4=M. M.|last5=Zaidan|first5=J.|last6=Danieli|first6=N. Siegelmann|last7=Whelan|first7=J.|last8=Subramanian|first8=R.|date=April 2003|title=Trauma as an etiologic factor of primary bone lymphoma: a report of 4 cases|url=https://pubmed.ncbi.nlm.nih.gov/17472245/|journal=Journal of B.U.ON.|volume=8|issue=2|pages=163–166|issn=1107-0625|pmid=17472245}}</ref>
* Implants, made from hard metals or silicone, associated with [[Anaplastic large-cell lymphoma|anaplastic large cell lymphoma]].<ref>{{Cite journal|last1=Palraj|first1=Bharath|last2=Paturi|first2=Anil|last3=Stone|first3=Ross G.|last4=Alvarez|first4=Harold|last5=Sebenik|first5=Matjaz|last6=Perez|first6=Maria T.|last7=Bush|first7=Larry M.|date=2010-11-01|title=Soft Tissue Anaplastic Large T-Cell Lymphoma Associated with a Metallic Orthopedic Implant: Case Report and Review of the Current Literature|url=https://www.jfas.org/article/S1067-2516(10)00326-1/abstract|journal=The Journal of Foot and Ankle Surgery|language=en|volume=49|issue=6|pages=561–564|doi=10.1053/j.jfas.2010.08.009|issn=1067-2516|pmid=20870426}}</ref><ref>{{Cite journal|last1=Popplewell|first1=Leslie|last2=Chang|first2=Karen|last3=Olevsky|first3=Olga|last4=Nademanee|first4=A.|last5=Forman|first5=Stephen|date=2004-11-16|title=Primary Anaplastic Large Cell Lymphoma of the Breast Occurring in Patients with Silicone Breast Implants.|url=https://ashpublications.org/blood/article/104/11/4563/56021/Primary-Anaplastic-Large-Cell-Lymphoma-of-the|journal=Blood|language=en|volume=104|issue=11|pages=4563|doi=10.1182/blood.V104.11.4563.4563|issn=0006-4971}}</ref>
* Implants, made from hard metals or silicone, associated with [[Anaplastic large-cell lymphoma|anaplastic large cell lymphoma]].<ref>{{cite journal|last1=Palraj|first1=Bharath|last2=Paturi|first2=Anil|last3=Stone|first3=Ross G.|last4=Alvarez|first4=Harold|last5=Sebenik|first5=Matjaz|last6=Perez|first6=Maria T.|last7=Bush|first7=Larry M.|date=2010-11-01|title=Soft Tissue Anaplastic Large T-Cell Lymphoma Associated with a Metallic Orthopedic Implant: Case Report and Review of the Current Literature|url=https://www.jfas.org/article/S1067-2516(10)00326-1/abstract|journal=The Journal of Foot and Ankle Surgery|language=en|volume=49|issue=6|pages=561–564|doi=10.1053/j.jfas.2010.08.009|issn=1067-2516|pmid=20870426}}</ref><ref>{{cite journal|last1=Popplewell|first1=Leslie|last2=Chang|first2=Karen|last3=Olevsky|first3=Olga|last4=Nademanee|first4=A.|last5=Forman|first5=Stephen|date=2004-11-16|title=Primary Anaplastic Large Cell Lymphoma of the Breast Occurring in Patients with Silicone Breast Implants.|url=https://ashpublications.org/blood/article/104/11/4563/56021/Primary-Anaplastic-Large-Cell-Lymphoma-of-the|journal=Blood|language=en|volume=104|issue=11|pages=4563|doi=10.1182/blood.V104.11.4563.4563|issn=0006-4971}}</ref>


===Familial component===
===Familial component===
Line 60: Line 78:


=== HIV/AIDS ===
=== HIV/AIDS ===
The [[Centers for Disease Control and Prevention]] (CDC) included certain types of non-Hodgkin lymphoma as AIDS-defining cancers in 1987.<ref>{{cite journal | title = Revision of the CDC surveillance case definition for acquired immunodeficiency syndrome. Council of State and Territorial Epidemiologists; AIDS Program, Center for Infectious Diseases | journal = MMWR Supplements | volume = 36 | issue = 1 | pages = 1S–15S | date = August 1987 | pmid = 3039334 | url = https://www.cdc.gov/mmwr/pdf/other/mmsu3601.pdf | url-status = live | archive-url = https://web.archive.org/web/20170609012431/https://www.cdc.gov/mmwr/pdf/other/mmsu3601.pdf | df = dmy | archive-date = 9 June 2017 | author1 = Centers for Disease Control (CDC) }}</ref> Immune suppression rather than HIV itself is implicated in the pathogenesis of this malignancy, with a clear correlation between the degree of immune suppression and the risk of developing NHL. Additionally, other retroviruses, such as [[HTLV]], may be spread by the same mechanisms that spread [[HIV]], leading to an increased rate of co-infection.<ref>{{cite journal| vauthors = Lee B, Bower M, Newsom-Davis T, Nelson M |title=HIV-related lymphoma|journal=HIV Therapy|volume=4|issue=6|year=2010|pages=649–659|issn=1758-4310|doi=10.2217/hiv.10.54}}</ref> The natural history of HIV infection has been greatly changed over time. As a consequence, rates of non-Hodgkin lymphoma (NHL) in people infected with HIV has significantly declined in recent years.<ref name="PinzoneFiorica2012">{{cite journal | vauthors = Pinzone MR, Fiorica F, Di Rosa M, Malaguarnera G, Malaguarnera L, Cacopardo B, Zanghì G, Nunnari G | display-authors = 6 | title = Non-AIDS-defining cancers among HIV-infected people | journal = European Review for Medical and Pharmacological Sciences | volume = 16 | issue = 10 | pages = 1377–88 | date = October 2012 | pmid = 23104654 }}</ref>
The [[Centers for Disease Control and Prevention]] (CDC) included certain types of non-Hodgkin lymphoma as AIDS-defining cancers in 1987.<ref>{{cite journal | title = Revision of the CDC surveillance case definition for acquired immunodeficiency syndrome. Council of State and Territorial Epidemiologists; AIDS Program, Center for Infectious Diseases | journal = MMWR Supplements | volume = 36 | issue = 1 | pages = 1S–15S | date = August 1987 | pmid = 3039334 | url = https://www.cdc.gov/mmwr/pdf/other/mmsu3601.pdf | url-status = live | archive-url = https://web.archive.org/web/20170609012431/https://www.cdc.gov/mmwr/pdf/other/mmsu3601.pdf | df = dmy | archive-date = 9 June 2017 | author1 = Centers for Disease Control (CDC) }}</ref> Immune suppression rather than HIV itself is implicated in the pathogenesis of this malignancy, with a clear correlation between the degree of immune suppression and the risk of developing NHL. Additionally, other retroviruses, such as [[HTLV]], may be spread by the same mechanisms that spread [[HIV]], leading to an increased rate of co-infection.<ref>{{cite journal| vauthors = Lee B, Bower M, Newsom-Davis T, Nelson M |title=HIV-related lymphoma|journal=HIV Therapy|volume=4|issue=6|year=2010|pages=649–659|issn=1758-4310|doi=10.2217/hiv.10.54}}</ref> The natural history of HIV infection has greatly changed over time. As a consequence, rates of non-Hodgkin lymphoma (NHL) in people infected with HIV has significantly declined in recent years.<ref name="PinzoneFiorica2012">{{cite journal | vauthors = Pinzone MR, Fiorica F, Di Rosa M, Malaguarnera G, Malaguarnera L, Cacopardo B, Zanghì G, Nunnari G | title = Non-AIDS-defining cancers among HIV-infected people | journal = European Review for Medical and Pharmacological Sciences | volume = 16 | issue = 10 | pages = 1377–88 | date = October 2012 | pmid = 23104654 }}</ref>


==Treatment==
==Treatment==
Line 67: Line 85:
=== Chemotherapy ===
=== Chemotherapy ===
The most common chemotherapy used for B-cell non-Hodgkin lymphoma is [[R-CHOP]], which is a regimen of four drugs (cyclophosphamide, doxorubicin, vincristine, and prednisone) plus rituximab.<ref>{{cite web|url=https://www.cancer.org/cancer/non-hodgkin-lymphoma/treating/b-cell-lymphoma.html|title=Treating B-Cell Non-Hodgkin Lymphoma|publisher=American Cancer Society|date=2019|access-date=23 August 2019}}</ref>
The most common chemotherapy used for B-cell non-Hodgkin lymphoma is [[R-CHOP]], which is a regimen of four drugs (cyclophosphamide, doxorubicin, vincristine, and prednisone) plus rituximab.<ref>{{cite web|url=https://www.cancer.org/cancer/non-hodgkin-lymphoma/treating/b-cell-lymphoma.html|title=Treating B-Cell Non-Hodgkin Lymphoma|publisher=American Cancer Society|date=2019|access-date=23 August 2019}}</ref>

R-CHP with [[polatuzumab vedotin]], an antibody-drug conjugate, was included as a category 1 preferred regimen for first-line DLBCL by the National Comprehensive Cancer Network in 2023.<ref>{{cite web |title=With hard-fought Polivy approval, Roche looks to shake up decades of established practice in lymphoma |url=https://www.fiercepharma.com/pharma/roche-wins-hard-fought-fda-approval-polivy-changing-20-years-lymphoma-practice |publisher=Fierce Pharma}}</ref>


=== Treatment complications ===
=== Treatment complications ===
If participants receive stem-cell transplants, they can develop a [[graft-versus-host disease]]. When compared with placebo for treating immune mediated inflammation post transplantation and in autoimmunity, mesenchymal stromal cells (MSCs) may reduce the all-cause mortality if they are used for a therapeutic reason.<ref name=":0" /> Moreover, the therapeutic use of MSCs may increase the complete response of acute and chronic GvHD, but the evidence is very uncertain.<ref name=":0" /> The evidence suggests that MSCs for prophylactic reason result in little to no difference in the all-cause mortality, in the relapse of malignant diseases, and in the incidence of acute GvHD.<ref name=":0" /> The evidence suggests that MSCs for prophylactic reason reduce the incidence of chronic GvHD.<ref name=":0">{{cite journal | vauthors = Fisher SA, Cutler A, Doree C, Brunskill SJ, Stanworth SJ, Navarrete C, Girdlestone J | title = Mesenchymal stromal cells as treatment or prophylaxis for acute or chronic graft-versus-host disease in haematopoietic stem cell transplant (HSCT) recipients with a haematological condition | journal = The Cochrane Database of Systematic Reviews | volume = 1 | pages = CD009768 | date = January 2019 | pmid = 30697701 | doi = 10.1002/14651858.CD009768.pub2 | collaboration = Cochrane Haematological Malignancies Group | pmc = 6353308 }}</ref>
If participants receive stem-cell transplants, they can develop a [[graft-versus-host disease]]. When compared with placebo for treating immune mediated inflammation post transplantation and in autoimmunity, mesenchymal stromal cells (MSCs) may reduce the all-cause mortality if they are used for a therapeutic reason.<ref name=":0" /> Moreover, the therapeutic use of MSCs may increase the complete response of acute and chronic GvHD, but the evidence is very uncertain.<ref name=":0" /> The evidence suggests that MSCs for prophylactic reason result in little to no difference in the all-cause mortality, in the relapse of malignant diseases, and in the incidence of acute GvHD.<ref name=":0" /> The evidence suggests that MSCs for prophylactic reason reduce the incidence of chronic GvHD.<ref name=":0">{{cite journal | vauthors = Fisher SA, Cutler A, Doree C, Brunskill SJ, Stanworth SJ, Navarrete C, Girdlestone J | title = Mesenchymal stromal cells as treatment or prophylaxis for acute or chronic graft-versus-host disease in haematopoietic stem cell transplant (HSCT) recipients with a haematological condition | journal = The Cochrane Database of Systematic Reviews | volume = 1 | pages = CD009768 | date = January 2019 | issue = 1 | pmid = 30697701 | doi = 10.1002/14651858.CD009768.pub2 | collaboration = Cochrane Haematological Malignancies Group | pmc = 6353308 }}</ref>


[[Platelet transfusion]]s may be necessary for those who receive chemotherapy or undergo a stem cell transplantation due to the higher risk for bleeding. When comparing therapeutic/non-prophylactic platelet transfusions to prophylactic platelet transfusions there is little to no difference in the mortality secondary to bleeding and they may result in a slight reduction in the number of days on which a significant bleeding event occurred.<ref name=":1">{{cite journal|vauthors=Estcourt L, Stanworth S, Doree C, Hopewell S, Murphy MF, Tinmouth A, Heddle N|date=May 2012|title=Prophylactic platelet transfusion for prevention of bleeding in patients with haematological disorders after chemotherapy and stem cell transplantation|journal=The Cochrane Database of Systematic Reviews|issue=5|pages=CD004269|doi=10.1002/14651858.CD004269.pub3|pmid=22592695|collaboration=Cochrane Haematological Malignancies Group}}</ref> The evidence suggests that therapeutic platelet transfusions result in a large increase in the number of people with at least one significant bleeding event and they likely result in a large reduction in the number of platelet transfusions.<ref name=":1" /><ref>{{cite journal | vauthors = Estcourt LJ, Stanworth SJ, Doree C, Hopewell S, Trivella M, Murphy MF | title = Comparison of different platelet count thresholds to guide administration of prophylactic platelet transfusion for preventing bleeding in people with haematological disorders after myelosuppressive chemotherapy or stem cell transplantation | journal = The Cochrane Database of Systematic Reviews | issue = 11 | pages = CD010983 | date = November 2015 | pmid = 26576687 | pmc = 4717525 | doi = 10.1002/14651858.CD010983.pub2 | collaboration = Cochrane Haematological Malignancies Group }}</ref>
[[Platelet transfusion]]s may be necessary for those who receive chemotherapy or undergo a stem cell transplantation due to the higher risk for bleeding. When comparing therapeutic/non-prophylactic platelet transfusions to prophylactic platelet transfusions there is little to no difference in the mortality secondary to bleeding and they may result in a slight reduction in the number of days on which a significant bleeding event occurred.<ref name=":1">{{cite journal|vauthors=Estcourt L, Stanworth S, Doree C, Hopewell S, Murphy MF, Tinmouth A, Heddle N|date=May 2012|title=Prophylactic platelet transfusion for prevention of bleeding in patients with haematological disorders after chemotherapy and stem cell transplantation|journal=The Cochrane Database of Systematic Reviews|issue=5|pages=CD004269|doi=10.1002/14651858.CD004269.pub3|pmid=22592695|collaboration=Cochrane Haematological Malignancies Group}}</ref> The evidence suggests that therapeutic platelet transfusions result in a large increase in the number of people with at least one significant bleeding event and they likely result in a large reduction in the number of platelet transfusions.<ref name=":1" /><ref>{{cite journal | vauthors = Estcourt LJ, Stanworth SJ, Doree C, Hopewell S, Trivella M, Murphy MF | title = Comparison of different platelet count thresholds to guide administration of prophylactic platelet transfusion for preventing bleeding in people with haematological disorders after myelosuppressive chemotherapy or stem cell transplantation | journal = The Cochrane Database of Systematic Reviews | issue = 11 | pages = CD010983 | date = November 2015 | volume = 2015 | pmid = 26576687 | pmc = 4717525 | doi = 10.1002/14651858.CD010983.pub2 | collaboration = Cochrane Haematological Malignancies Group }}</ref>


=== Other ===
=== Other ===
It is not clear if including aerobic physical exercise, in addition to the standard treatment for adult patients with haematological malignancies, is effective at reducing anxiety and serious adverse effects.<ref name=":2" /> Aerobic physical exercises may result in little to no difference in the mortality, in the quality of life and in the physical functioning.<ref name=":2" /> These exercises may result in a slight reduction in depression and most likely reduce fatigue.<ref name=":2">{{cite journal | vauthors = Knips L, Bergenthal N, Streckmann F, Monsef I, Elter T, Skoetz N | title = Aerobic physical exercise for adult patients with haematological malignancies | journal = The Cochrane Database of Systematic Reviews | volume = 1 | pages = CD009075 | date = January 2019 | pmid = 30702150 | doi = 10.1002/14651858.CD009075.pub3 | collaboration = Cochrane Haematological Malignancies Group | pmc = 6354325 }}</ref>
It is unclear if including aerobic physical exercise, in addition to the standard treatment for adult patients with haematological malignancies, is effective at reducing anxiety and serious adverse effects.<ref name=":2" /> Aerobic physical exercises may result in little to no difference in the mortality, in the quality of life and in the physical functioning.<ref name=":2" /> These exercises may result in a slight reduction in depression and most likely reduce fatigue.<ref name=":2">{{cite journal | vauthors = Knips L, Bergenthal N, Streckmann F, Monsef I, Elter T, Skoetz N | title = Aerobic physical exercise for adult patients with haematological malignancies | journal = The Cochrane Database of Systematic Reviews | volume = 1 | pages = CD009075 | date = January 2019 | issue = 1 | pmid = 30702150 | doi = 10.1002/14651858.CD009075.pub3 | collaboration = Cochrane Haematological Malignancies Group | pmc = 6354325 }}</ref>


==Prognosis==
==Prognosis==
Prognosis depends on the subtype, the staging, a person's age, and other factors. Across all subtypes, 5-year survival for NHL is 71%, ranging from 81% for Stage 1 disease to 61% for Stage 4 disease.<ref>{{cite web |title=Non-Hodgkin's Lymphoma Diagnosis, Treatment, Symptoms & Causes |url=https://www.medicinenet.com/non-hodgkins_lymphomas/article.htm#what_is_the_prognosis_and_survival_rate_for_non-hodgkin#39s_lymphoma |website=MedicineNet |access-date=27 May 2020 |language=en}}</ref>
Prognosis depends on the subtype, the staging, a person's age, and other factors. Across all subtypes, 5-year survival for NHL is 71-74%.<ref>{{cite web | url=https://www.cancer.org/cancer/types/non-hodgkin-lymphoma/detection-diagnosis-staging/factors-prognosis.html | title=Survival Rates and Factors That Affect Prognosis (Outlook) for Non-Hodgkin Lymphoma }}</ref><ref>{{cite web | url=https://cancer.ca/en/cancer-information/cancer-types/non-hodgkin-lymphoma/prognosis-and-survival | title=Prognosis and survival for non-Hodgkin lymphoma | date=October 2023 }}</ref><ref>{{cite web | url=https://www.cancer.gov/types/lymphoma/patient/adult-nhl-treatment-pdq#_158 | title=Non-Hodgkin Lymphoma Treatment - NCI | date=24 November 2023 }}</ref>


==Epidemiology==
==Epidemiology==
Globally, as of 2010, there were 210,000 deaths, up from 143,000 in 1990.<ref name="Loz2012">{{cite journal|display-authors=etal|date=15 December 2012|title=Global and regional mortality from 235 causes of death for 20 age groups in 1990 and 2010: a systematic analysis for the Global Burden of Disease Study 2010.|journal=Lancet|volume=380|issue=9859|pages=2095–128|doi=10.1016/S0140-6736(12)61728-0|pmid=23245604|vauthors=Lozano R, Naghavi M, Foreman K, Lim S, Shibuya K, Aboyans V, Abraham J, Adair T, Aggarwal R, Ahn SY|hdl=10536/DRO/DU:30050819|s2cid=1541253|url=https://zenodo.org/record/2557786|hdl-access=free}}</ref>
Globally, as of 2010, there were 210,000 deaths, up from 143,000 in 1990.<ref name="Loz2012">{{cite journal|display-authors=etal|date=15 December 2012|title=Global and regional mortality from 235 causes of death for 20 age groups in 1990 and 2010: a systematic analysis for the Global Burden of Disease Study 2010.|journal=Lancet|volume=380|issue=9859|pages=2095–128|doi=10.1016/S0140-6736(12)61728-0|pmid=23245604|vauthors=Lozano R, Naghavi M, Foreman K, Lim S, Shibuya K, Aboyans V, Abraham J, Adair T, Aggarwal R, Ahn SY|pmc=10790329 |hdl=10536/DRO/DU:30050819|s2cid=1541253|url=https://zenodo.org/record/2557786|hdl-access=free}}</ref>


Rates of non-Hodgkin lymphoma increase steadily with age.<ref name="Tobias2015" /> Up to 45 years NHL is more common among males than females.<ref>{{cite book|last1=Patte|first1=Catherine|last2=Bleyer|first2=Archie|last3=Cairo|first3=Mitchell S.|editor-last1=Bleyer|editor-first1=W. Archie|editor-last2=Barr|editor-first2=Ronald D. | name-list-style = vanc |title=Cancer in Adolescents and Young Adults (Pediatric Oncology)|chapter=Non-Hodgkin Lymphoma|publisher=Springer|year=2007|page=129|isbn=978-3-540-40842-0|doi=10.1007/978-3-540-68152-6_9}}</ref>
Rates of non-Hodgkin lymphoma increase steadily with age.<ref name="Tobias2015" /> Up to 45 years NHL is more common among males than females.<ref>{{cite book|last1=Patte|first1=Catherine|last2=Bleyer|first2=Archie|last3=Cairo|first3=Mitchell S.|editor-last1=Bleyer|editor-first1=W. Archie|editor-last2=Barr|editor-first2=Ronald D. |title=Cancer in Adolescents and Young Adults (Pediatric Oncology)|chapter=Non-Hodgkin Lymphoma|publisher=Springer|year=2007|page=129|isbn=978-3-540-40842-0|doi=10.1007/978-3-540-68152-6_9}}</ref>


===Australia===
===Australia===
With over 6,000 people being diagnosed yearly, NHL is the fifth most common cancer in Australia.<ref>{{cite web|url=https://www.lymphoma.org.au/page/9/non-hodgkin-lymphoma|title=Non-Hodgkin Lymphoma Overview|website=lymphoma.org.au|date=2019|access-date=24 August 2019}}</ref>
Around 6600 people are diagnosed with non-Hodgkin lymphoma in Australia each year.<ref>{{cite web|url=https://www.leukaemia.org.au/blood-cancer/lymphoma/non-hodgkin-lymphoma/|title=What is non-Hodgkin lymphoma?|website=www.leukaemia.org.au|date=2023|access-date=16 July 2023|archive-date=16 July 2023|archive-url=https://web.archive.org/web/20230716072849/https://www.leukaemia.org.au/blood-cancer/lymphoma/non-hodgkin-lymphoma/}}</ref>


=== Canada ===
=== Canada ===
In Canada, NHL is the fifth most common cancer in males and sixth most common cancer in females. The lifetime probability of developing a lymphoid cancer is 1 in 44 for males, and 1 in 51 for females.<ref>{{cite web|url=http://www.cancer.ca/en/cancer-information/cancer-101/canadian-cancer-statistics-publication/?region=on|title=Canadian Cancer Statistics|website=www.cancer.ca|access-date=8 February 2018}}</ref>
In Canada NHL is the fifth most common cancer in males and sixth most common cancer in females. The lifetime probability of developing a lymphoid cancer is 1 in 44 for males, and 1 in 51 for females.<ref>{{cite web|url=http://www.cancer.ca/en/cancer-information/cancer-101/canadian-cancer-statistics-publication/?region=on|title=Canadian Cancer Statistics|website=www.cancer.ca|access-date=8 February 2018|archive-date=25 January 2018|archive-url=https://web.archive.org/web/20180125104054/http://www.cancer.ca/en/cancer-information/cancer-101/canadian-cancer-statistics-publication/?region=on|url-status=dead}}</ref>


===United Kingdom===
===United Kingdom===
Line 103: Line 123:
NHL consists of many different conditions that have little in common with each other. They are grouped by their aggressiveness. Less aggressive non-Hodgkin lymphomas are compatible with a long survival while more aggressive non-Hodgkin lymphomas can be rapidly fatal without treatment. Without further narrowing, the label is of limited usefulness for people or doctors. The subtypes of [[lymphoma]] are listed there.{{citation needed|date=January 2018}}
NHL consists of many different conditions that have little in common with each other. They are grouped by their aggressiveness. Less aggressive non-Hodgkin lymphomas are compatible with a long survival while more aggressive non-Hodgkin lymphomas can be rapidly fatal without treatment. Without further narrowing, the label is of limited usefulness for people or doctors. The subtypes of [[lymphoma]] are listed there.{{citation needed|date=January 2018}}


Nevertheless, the Working Formulation and the NHL category continue to be used by many. To this day, lymphoma statistics are compiled as Hodgkin's versus non-Hodgkin lymphomas by major cancer agencies, including the US [[National Cancer Institute]] in its [[Surveillance Epidemiology and End Results|SEER]] program, the [[Canadian Cancer Society]] and the [[International Agency for Research on Cancer|IARC]].{{cn|date=November 2021}}
Nevertheless the Working Formulation and the NHL category continue to be used by many. To this day, lymphoma statistics are compiled as Hodgkin's versus non-Hodgkin lymphomas by major cancer agencies, including the US [[National Cancer Institute]] in its [[Surveillance Epidemiology and End Results|SEER]] program, the [[Canadian Cancer Society]] and the [[International Agency for Research on Cancer|IARC]].{{cn|date=November 2021}}


==References==
==References==

Revision as of 21:21, 6 April 2024

Non-Hodgkin lymphoma
Other namesNon-Hodgkin disease
Micrograph of mantle cell lymphoma, a type of non-Hodgkin lymphoma. Terminal ileum. H&E stain.
SpecialtyHematology and oncology
SymptomsEnlarged lymph nodes, fever, night sweats, weight loss, tiredness, itching[1]
Usual onset65–75 years old[2]
Risk factorsPoor immune function, autoimmune diseases, Helicobacter pylori infection, hepatitis C, obesity, Epstein-Barr virus infection[1][3]
Diagnostic methodBone marrow or lymph node biopsy[1]
TreatmentChemotherapy, radiation, immunotherapy, targeted therapy, stem cell transplantation, surgery, watchful waiting[1]
PrognosisFive-year survival rate 71% (USA)[2]
Frequency4.3 million (affected during 2015)[4]
Deaths231,400 (2015)[5]

Non-Hodgkin lymphoma (NHL), also known as non-Hodgkin's lymphoma, is a group of blood cancers that includes all types of lymphomas except Hodgkin lymphomas.[1] Symptoms include enlarged lymph nodes, fever, night sweats, weight loss, and tiredness.[1] Other symptoms may include bone pain, chest pain, or itchiness.[1] Some forms are slow-growing while others are fast-growing.[1]

Lymphomas are types of cancer that develop from lymphocytes, a type of white blood cell.[2] Risk factors include poor immune function, autoimmune diseases, Helicobacter pylori infection, hepatitis C, obesity, and Epstein–Barr virus infection.[1][3] The World Health Organization classifies lymphomas into five major groups, including one for Hodgkin lymphoma.[6] Within the four groups for NHL are over 60 specific types of lymphoma.[7][8] Diagnosis is by examination of a bone marrow or lymph node biopsy.[1] Medical imaging is done to help with cancer staging.[1]

Treatment depends on whether the lymphoma is slow- or fast-growing and if it is in one area or many areas.[1] Treatments may include chemotherapy, radiation, immunotherapy, targeted therapy, stem-cell transplantation, surgery, or watchful waiting.[1] If the blood becomes overly thick due to high numbers of antibodies, plasmapheresis may be used.[1] Radiation and some chemotherapy, however, increase the risk of other cancers, heart disease, or nerve problems over the subsequent decades.[1]

In 2015, about 4.3 million people had non-Hodgkin lymphoma, and 231,400 (5.4%) died.[4][5] In the United States, 2.1% of people are affected at some point in their life.[2] The most common age of diagnosis is between 65 and 75 years old.[2] The five-year survival rate in the United States is 71%.[2]

Signs and symptoms

The signs and symptoms of non-Hodgkin lymphoma vary depending upon its location within the body. Symptoms include enlarged lymph nodes, fever, night sweats, weight loss, and tiredness. Other symptoms may include bone pain, chest pain, or itchiness. Some forms are slow growing, while others are fast growing.[1] Enlarged lymph nodes may cause lumps to be felt under the skin when they are close to the surface of the body. Lymphomas in the skin may also result in lumps, which are commonly itchy, red, or purple. Lymphomas in the brain can cause weakness, seizures, problems with thinking, and personality changes.[9]

While an association between non-Hodgkin lymphoma and endometriosis has been described,[10] these associations are tentative.[11]

Diagnosis

Tests for non-Hodgkin lymphoma include;

  • Complete blood count (CBC).
  • Blood chemistry studies.
  • Hepatitis B and hepatitis C test.
  • HIV test.
  • CT scan (CAT scan).
  • PET scan (positron emission tomography scan).
  • Bone marrow aspiration and biopsy.

If cancer is found, the following tests may be done to study the cancer cells:

  • Immunohistochemistry.
  • Cytogenetic analysis.
  • Immunophenotyping.

Other tests and procedures may be done depending on the signs and symptoms seen and where the cancer forms in the body.[12][13]

Causes

The many different forms of lymphoma probably have different causes. These possible causes and associations with at least some forms of NHL include:

Familial component

Familial lymphoid cancer is rare. The familial risk of lymphoma is elevated for multiple lymphoma subtypes, suggesting a shared genetic cause. However, a family history of a specific subtype is most strongly associated with risk for that subtype, indicating that these genetic factors are subtype-specific. Genome-wide association studies have successfully identified 67 single-nucleotide polymorphisms from 41 loci, most of which are subtype specific.[26]

HIV/AIDS

The Centers for Disease Control and Prevention (CDC) included certain types of non-Hodgkin lymphoma as AIDS-defining cancers in 1987.[27] Immune suppression rather than HIV itself is implicated in the pathogenesis of this malignancy, with a clear correlation between the degree of immune suppression and the risk of developing NHL. Additionally, other retroviruses, such as HTLV, may be spread by the same mechanisms that spread HIV, leading to an increased rate of co-infection.[28] The natural history of HIV infection has greatly changed over time. As a consequence, rates of non-Hodgkin lymphoma (NHL) in people infected with HIV has significantly declined in recent years.[16]

Treatment

The traditional treatment of NHL includes chemotherapy, radiotherapy, and stem-cell transplants.[29][30] There have also been developments in immunotherapy used in the treatment of NHL.[31]

Chemotherapy

The most common chemotherapy used for B-cell non-Hodgkin lymphoma is R-CHOP, which is a regimen of four drugs (cyclophosphamide, doxorubicin, vincristine, and prednisone) plus rituximab.[32]

R-CHP with polatuzumab vedotin, an antibody-drug conjugate, was included as a category 1 preferred regimen for first-line DLBCL by the National Comprehensive Cancer Network in 2023.[33]

Treatment complications

If participants receive stem-cell transplants, they can develop a graft-versus-host disease. When compared with placebo for treating immune mediated inflammation post transplantation and in autoimmunity, mesenchymal stromal cells (MSCs) may reduce the all-cause mortality if they are used for a therapeutic reason.[34] Moreover, the therapeutic use of MSCs may increase the complete response of acute and chronic GvHD, but the evidence is very uncertain.[34] The evidence suggests that MSCs for prophylactic reason result in little to no difference in the all-cause mortality, in the relapse of malignant diseases, and in the incidence of acute GvHD.[34] The evidence suggests that MSCs for prophylactic reason reduce the incidence of chronic GvHD.[34]

Platelet transfusions may be necessary for those who receive chemotherapy or undergo a stem cell transplantation due to the higher risk for bleeding. When comparing therapeutic/non-prophylactic platelet transfusions to prophylactic platelet transfusions there is little to no difference in the mortality secondary to bleeding and they may result in a slight reduction in the number of days on which a significant bleeding event occurred.[35] The evidence suggests that therapeutic platelet transfusions result in a large increase in the number of people with at least one significant bleeding event and they likely result in a large reduction in the number of platelet transfusions.[35][36]

Other

It is unclear if including aerobic physical exercise, in addition to the standard treatment for adult patients with haematological malignancies, is effective at reducing anxiety and serious adverse effects.[37] Aerobic physical exercises may result in little to no difference in the mortality, in the quality of life and in the physical functioning.[37] These exercises may result in a slight reduction in depression and most likely reduce fatigue.[37]

Prognosis

Prognosis depends on the subtype, the staging, a person's age, and other factors. Across all subtypes, 5-year survival for NHL is 71-74%.[38][39][40]

Epidemiology

Globally, as of 2010, there were 210,000 deaths, up from 143,000 in 1990.[41]

Rates of non-Hodgkin lymphoma increase steadily with age.[20] Up to 45 years NHL is more common among males than females.[42]

Australia

Around 6600 people are diagnosed with non-Hodgkin lymphoma in Australia each year.[43]

Canada

In Canada NHL is the fifth most common cancer in males and sixth most common cancer in females. The lifetime probability of developing a lymphoid cancer is 1 in 44 for males, and 1 in 51 for females.[44]

United Kingdom

On average, according to data for the 2014–2016 period, around 13,900 people are diagnosed with NHL yearly. It is the sixth most common cancer in the UK, and is the eleventh most common cause of cancer death accounting for around 4,900 deaths per year.[45]

United States

Age adjusted data from 2012 to 2016 shows about 19.6 cases of NHL per 100,000 adults per year, 5.6 deaths per 100,000 adults per year, and around 694,704 people living with non-Hodgkin lymphoma. About 2.2 percent of men and women will be diagnosed with NHL at some point during their lifetime.[46]

The American Cancer Society lists non-Hodgkin lymphoma as one of the most common cancers in the United States, accounting for about 4% of all cancers.[47]

History

While consensus was rapidly reached on the classification of Hodgkin lymphoma, there remained a large group of very different diseases requiring further classification. The Rappaport classification, proposed by Henry Rappaport in 1956 and 1966, became the first widely accepted classification of lymphomas other than Hodgkin. Following its publication in 1982, the Working Formulation became the standard classification for this group of diseases. It introduced the term non-Hodgkin lymphoma or NHL and defined three grades of lymphoma.[citation needed]

NHL consists of many different conditions that have little in common with each other. They are grouped by their aggressiveness. Less aggressive non-Hodgkin lymphomas are compatible with a long survival while more aggressive non-Hodgkin lymphomas can be rapidly fatal without treatment. Without further narrowing, the label is of limited usefulness for people or doctors. The subtypes of lymphoma are listed there.[citation needed]

Nevertheless the Working Formulation and the NHL category continue to be used by many. To this day, lymphoma statistics are compiled as Hodgkin's versus non-Hodgkin lymphomas by major cancer agencies, including the US National Cancer Institute in its SEER program, the Canadian Cancer Society and the IARC.[citation needed]

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External links