Cyst

From Wikipedia, the free encyclopedia
  (Redirected from Residual cyst)
Jump to: navigation, search
This article is about cysts in the body. For the ICAO airport code CYST, see St. Theresa Point Airport. For hard-shelled resting stages of some small organisms, see Microbial cyst.
Cyst
Classification and external resources
Bronchogenic cyst high mag.jpg
MedlinePlus 003240
MeSH D003560

A cyst is a closed sac, having a distinct membrane and division compared to the nearby tissue. Basically, a cyst is a cluster of cells that have grouped together to form a sac (not unlike the manner in which water molecules group together, forming a bubble); however, the distinguishing aspect of a cyst is the cells forming the "shell" of such a sac, are distinctly abnormal (in both appearance and behaviour) when compared to all surrounding cells for that given location. It may contain air, fluids, or semi-solid material. A collection of pus is called an abscess, not a cyst. Once formed, a cyst may sometimes resolve on its own. Whether a cyst that fails to resolve may need to be removed by surgery will depend on what type of cyst it is and where in the body it has formed.

Types[edit]

Cystic fibrosis[edit]

Despite being described in 1938 as the microscopic appearance of cysts in the pancreas,[5] cystic fibrosis is an example of a genetic disorder whose name is related to fibrosis of the cystic duct (which serves the gallbladder) and does not involve actual cysts.[6]

This is just one example of how the Greek root cyst-, which simply means a fluid-filled sac, is also found in medical terms that relate to the urinary bladder and the gallbladder but that have nothing to do with cysts.

Cystic neoplasm[edit]

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:

Treatment[edit]

Treatment ranges from simple 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 infected and symptomatic.[2]

Related structures[edit]

A pseudocyst is collection without a distinct membrane.

A syrinx in the spinal cord or brainstem is sometimes inaccurately referred to as a cyst.

See also[edit]

References[edit]

  1. ^ Zadik, Yehuda; Aktaş Alper; Drucker Scott; Nitzan W Dorrit (2012). "Aneurysmal bone cyst of mandibular condyle: A case report and review of the literature". J Craniomaxillofac Surg 40. doi:10.1016/j.jcms.2011.10.026. PMID 22118925. 
  2. ^ a b Zadik Y, Yitschaky O, Neuman T, Nitzan DW (May 2011). "On the Self-Resolution Nature of the Buccal Bifurcation Cyst". J Oral Maxillofac Surg 20 (5): e15. doi:10.1016/j.joms.2011.02.124. PMID 21571416. 
  3. ^ Parapelvic cyst
  4. ^ Pericardial cyst
  5. ^ Andersen, D.H. (1938). "Cyst leiesic fibrosis of the pancreas and its relation to celiac disease". Am J Dis Child 56: 344–399. doi:10.1001/archpedi.1938.01980140114013. 
  6. ^ Greenholz SK, Krishnadasan B, Marr C, Cannon R (1997). "Biliary obstruction in infants with cystic fibrosis requiring Kasai portoenterostomy". J. Pediatr. Surg. 32 (2): 175–9; discussion 179–80. doi:10.1016/S0022-3468(97)90174-3. PMID 9044117. 

External links[edit]