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About|cysts in the body|the ICAO airport code CYST |St. Theresa Point Airport|hard-shelled resting stages of some small organisms|Microbial cystInfobox Disease |Name = Cyst | Image = bronchogenic_cyst_high_mag.jpg | Caption = Micrograph of a mediastinal bronchogenic cyst . H& E stain . | DiseasesDB = | ICD10 = | ICD9 = | ICDO = | OMIM = | MedlinePlus = 003240 | eMedicineSubj = | eMedicineTopic = | MeshID = D003560 | A cyst is a closed sac, having a distinct biological membrane|membrane and cell division|division compared to the nearby Biological tissue|tissue . It may contain air , fluids, or semi-solid material. A collection of pus is called an abscess , not a cyst. Once formed, a cyst could go away on its own or may have to be removed through surgery .
Types
Acne cyst – Pseudocysts associated with cystic acne . Actually an inflammatory nodule with or without an associated epidermoid inclusion cyst.
Aneurysmal bone cyst (Aggressive lesion with x-ray|radiographic cystic appearance)cite journal |author=Zadik, Yehuda; Aktas Alper; Drucker Scott; Nitzan W Dorrit |title=Aneurysmal bone cyst of mandibular condyle: A case report and review of the literature |journal=J Craniomaxillofac Surg |volume=40 |issue= |pages= |year=2012 |month= |pmid=22118925 |url= http://www.sciencedirect.com/science/article/pii/S1010518211002551|doi=10.1016/j.jcms.2011.10.026
Arachnoid cyst (between the surface of the brain and the Human cranium|cranial base or on the arachnoid membrane)
Baker's cyst or popliteal cyst (behind the knee joint)
Bartholin's cyst
Breast cyst
Buccal bifurcation cyst
Calcifying odontogenic cyst
Chalazion|Chalazion cyst (eyelid)
Chocolate cyst
Choroid plexus cyst (brain)
Colloid cyst
Cysticercosis|Cysticercal cyst (the larval stage of Taenia sp. (Crain's backs))
Dentigerous cyst (associated with the crowns of non-erupted teeth)
Dermoid cyst (ovaries, testes, many other locations from head to tailbone)
Epididymal cyst (found in the vessels attached to the testes)
Ganglion cyst (hand/foot joints and tendons)
Glandular odontogenic cyst
Glial cyst (in the brain)
Gartner's duct cyst (vaginal or vulvar cyst of embryological origin)
Hydatid cyst (larval stage of Echinococcus granulosus ( tapeworm ))
Hydrocele ( testicle )
Odontogenic keratocyst|Keratocyst (in the jaws, these can appear solitary or associated with the Gorlin-Goltz or Nevoid basal cell carcinoma syndrome . The latest World Health Organization classification considers Keratocysts as tumors rather than cysts)
Polycystic liver disease|Liver cystic disease
Chalazion|Meibomian cyst (eyelid)
Mucoid cyst (ganglion cysts of the digits)
Mucous cyst of the oral mucosa
Nabothian cyst (cervix)
Nasolabial duct cyst
Odontogenic cyst (teeth)
Ovarian cyst (ovaries, functional and pathological)
Radicular cyst (associated with the roots of dental pulp|non-vital tooth|teeth , also known as periapical cyst )
Residual cyst
Sebaceous cyst (sac below skin)
Spermatocele ( testicle )
Stafne static bone cyst (An anatomic variant with radiographic cystic appearance in the posterior mandible )
Tarlov cyst (spine)
Trichilemmal cyst – Same as a pilar cyst. A familial cyst of the scalp.
Vocal fold cyst
Cystic fibrosis
Despite being described in 1938 as the microscopic appearance of cysts in the pancreas,cite journal | author = Anderson, D.H. | year = 1938 | title = Cyst leiesic fibrosis of the pancreas and its relation to celiac disease | journal = Am J Dis Child | volume = 56 | pages = 344–399 cystic fibrosis is an example of a genetic disorder whose name is related to fibrosis of the cystic duct and does not involve actual cysts.cite journal |author=Greenholz SK, Krishnadasan B, Marr C, Cannon R |title=Biliary obstruction in infants with cystic fibrosis requiring Kasai portoenterostomy |journal=J. Pediatr. Surg. |volume=32 |issue=2 |pages=175–9; discussion 179–80 |year=1997 |pmid=9044117|doi=10.1016/S0022-3468(97)90174-3
Cystic neoplasm
Most cysts in the body are benign ( dysfunctional ) tumors, the result of plugged ducts or other natural body outlets for secretions. However sometimes these masses are considered neoplasm :
Dermoid cyst
Keratocystic odontogenic tumor
Calcifying odontogenic cyst
Treatment
Treatment ranges from simple enucleation (surgery)|enucleation of the cyst to curettage to resection . There are cysts, e.g. buccal bifurcation cyst with self-resolation nature, in which close observation only can be employed unless the cyst is infection|infected and symptomatic .cite journal |author= Zadik Y, Yitschaky O, Neuman T, Nitzan DW |title=On the Self-Resolution Nature of the Buccal Bifurcation Cyst |journal=J Oral Maxillofac Surg |volume=20 |issue=5 |pages=e15 |year=2011 |month=May |pmid=21571416 |doi=10.1016/j.joms.2011.02.124|url= http://www.sciencedirect.com/science? _ob=ArticleURL& _udi=B6WKF-52VP3D1-6& _user=10& _coverDate=05%2F14%2F2011& _rdoc=9& _fmt=high& _orig=browse& _origin=browse& _zone=rslt_list_item& _srch=doc-info(%23toc%236905%239999%23999999999%2399999%23FLA%23display%23Articles)& _cdi=6905& _sort=d& _docanchor=& _ct=207& _acct=C000050221& _version=1& _urlVersion=0& _userid=10& md5=47e40681e02990c1d46b7f818fe30630& searchtype=a
Related structures
A pseudocyst is collection without a distinct membrane.
A syrinx (medicine)|syrinx in the spinal cord or brainstem is sometimes inaccurately referred to as a cyst.
See also
List of cutaneous conditions
References
reflist
External links
http://www.medicinenet.com/script/main/art.asp? articlekey=55517 "Cyst Symptoms and Causes" by Melissa Conrad Stöppler, MD and William C. Shiel, Jr., MD, FACP, FACR.
