Nevus

Classification according to ICD-10
D22.-	Melanocyte nevus
ICD-10 online (WHO version 2019)

Nevus (from Latin naevus " birthmark ") is the general name for a circumscribed, benign malformation of the skin or mucous membrane in which normal cells or tissue are increased, decreased or somewhat unevenly.

overview

Nevi are hamartomas (atypically differentiated cell aggregates) of the skin or mucous membrane.

The most common of these are the brownish colored nevi of the pigment-forming cells ( pigment nevi ), which are widely known through colloquial terms such as “birthmark” or “ mole ”. They represent only a certain subspecies of the nevi. "Birthmarks" are specifically called the nevi that are already present at birth, "birthmarks", "werewolf bite" or "angel's kiss", especially shapes that later disappear again.

There are many other, rarer types of nevi that do not consist of pigment-forming melanocytes or nevus cells , but rather of blood vessel cells, connective tissue cells, gland cells or other cells, and accordingly have a completely different aspect. This includes, for example, the relatively common nevus Unna birthmark (Bossard spot, “stork bite” in the neck), or the crimson to brownish red “fire mark” (medical nevus flammeus , also used as a name for red nevus-Unna forms).

“Birth mark” is also called “blood sponges” ( hemangioma , which is a growing, mostly benign tumor form, not a hamartoma), or symptoms of the rare Rubinstein-Taybi syndrome .

Classification

The following list shows how heterogeneous the entire group of skin lesions actually is, for which the word nevus can be used as an umbrella term.

Nevi from pigment-forming cells (pigment nevi)

Synonyms: melanocytic nevus, melanocyte nevus, mole, mole, birthmark

Congenital melanocytic nevus on the tip of the nose

Pigment nevus

melanocytic nevi ("real" melanocytic nevi from normal melanocytes )
- epidermal melanocytic nevi (located in the epidermis )
  - Ephelids (freckles)
  - Lentigines
    - Lentigo simplex ("liver spots")
    - Lentigo solaris (age spots)
  - Nevus pigmentosus (café-au-lait-stain)
  - Nevus spilus
  - Becker nevus
- dermal melanocytic nevi (located in the dermis )
  - Mongolian spot
  - Naevus fuscocaeruleus
    - Nevus Ota
    - Ito nevus
  - Naevus caeruleus (Blue nevus)
Nevus cell nevi (nevi from nevus cells )
Nevi from atypical melanocytes or nevus cells
- Dysplastic nevus

Vascular nevi and hemangiomas

Benign nevus cell nevus (compound nevus)

capillary hemangioma

Naevus flammeus
- Spider nevus
Hemangioma
pyogenic granuloma ( granuloma pyogenicum )

Other nevi

Epidermal nevus
Sebaceous nevus (also Talgdrüsennävus called)
Naevus lipomatosus
Sweat gland nevus
Hair ovus
Comedonic nevus
Connective tissue nevus

literature

Thomas B. Fitzpatrick, Klaus Wolff (ed.): Atlas and synopsis of clinical dermatology: common and threatening diseases . 3. Edition. McGraw-Hill, New York; Frankfurt a. M. 1998, ISBN 0-07-709988-5 .
Ernst G. Jung, Ingrid Moll (Ed.): Dermatology . 5th edition. Thieme, Stuttgart 2003, ISBN 3-13-126685-6 .

Web links

Commons : nevus - collection of images, videos and audio files

Nävus Netzwerk Deutschland eV - the German-speaking doctor-patient network on the subject of congenital nevi

Individual evidence

↑ Erich Pertsch: Langenscheidts Large School Dictionary Latin-German. Langenscheidt, Berlin 1978, ISBN 3-468-07201-5
↑ M. Sand, D. Sand, C. Thrandorf, V. Paech, P. Altmeyer, FG Bechara: Cutaneous lesions of the nose. In: Head & face medicine Volume 6, 2010, p. 7, ISSN 1746-160X . doi : 10.1186 / 1746-160X-6-7 . PMID 20525327 . (Review). Open Access

[LANGENSCHEIDT_LAT-1] Erich Pertsch: Langenscheidts Large School Dictionary Latin-German. Langenscheidt, Berlin 1978, ISBN 3-468-07201-5

[2] M. Sand, D. Sand, C. Thrandorf, V. Paech, P. Altmeyer, FG Bechara: Cutaneous lesions of the nose. In: Head & face medicine Volume 6, 2010, p. 7, ISSN 1746-160X . doi : 10.1186 / 1746-160X-6-7 . PMID 20525327 . (Review). Open Access