Cyst (medicine)
A cyst or cyst ( ancient Greek κύστις kystis , German , bubble ' ) is one of an epithelial -lined pellicle cavity in the tissue of the body. If this closed tissue pocket is not covered by an epithelial membrane, but only by a connective tissue membrane, it is called a pseudocyst .
The cavity of a cyst can be filled with air ( lung cysts ), tissue fluid, urine ( kidney cysts ), blood, pus ( empyema ), mucus (in cystic fibrosis ), sebum ( atheroma ), pus / sebum ( pustules ) or parasites ( parasite cysts ) .
A cyst can be single or multiple chambers, whereby several small cysts close together can look like one large multiple chamber cyst.
Emergence
Cysts can be congenital or acquired. If the cyst is based on an impairment of drainage, it is called a retention cyst .
Congenital cysts arise from embryonic differentiation defects such as cystic kidneys , cystic lung . In these cases, the respective organ always has a large number of cysts (polycysts).
Acquired cysts result from injuries, infections, or parasite infestations. In these cases, the respective organ usually has only one or a few cysts. However, extensive parasite infestation can also lead to a large number of cysts (see: Polycystic Echinococcosis ).
distance
The surgical removal of a cyst is called a cystectomy , although this term is also used in medicine for the removal of the urinary bladder , even if it is an organ and not a cyst in the above sense.
List of cysts
- Cross-disciplinary cysts
- Cysts in Angiology
- Cysts in surgery
- Bochdalek cyst (thyroid gland)
- Liver cyst
- Mucoid cyst
- Cysts in dermatology
- Atheroma (sebum cyst)
- Epithelial cyst
- Follicular cyst
- Sebum cyst
- Cysts in gynecology
- Dermoid cyst
- Ovarian cyst (ovary)
- Ovula Nabothi (retention cyst of the uterine lining)
- Mammary cyst (breast)
- Cysts in ear, nose and throat medicine
- Cervical cyst
- Laryngeal cysts
- Mucocele (mucous cyst)
- Tornwaldt cyst
- Nasopalatine duct cyst
- Cysts in pulmonary medicine
- Honeycomb lung (cyst lung )
- Cysts in neurology and neurosurgery
- Pituitary duct cells
- Arachnoid cyst
- Plexus cyst (plexus choroid cyst)
- Tarlov cyst ( meninges , usually on the sacrum)
- Colloid cyst (typically around the third ventricle )
- Rathke's cyst (on the Rathke pocket of the intermediate pars of the pituitary gland)
- Cysticercosis
- Cysts in the skeletal system
- Synovial cyst ( joint cyst )
- Cysts in urology
- Cysts in dentistry
- Nonodontogenic cysts : nasopalatal cyst, dermoid and epidermoid cysts, ranula , mucosal retention cysts
- Odontogenic Cysts : Radicular Cysts, Follicular Cysts, Primordial Cysts, Periodontal Cysts, Gingival Cysts, Dentition Cysts, Residual Cysts
- in veterinary medicine
