Cyst

Cyst
Classification and external resources

Micrograph of a mediastinal bronchogenic cyst. H&E stain.
MedlinePlus 003240
MeSH D003560

A cyst is a closed sac, having a distinct membrane and division on the nearby 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.

Contents

Locations

Cystic fibrosis

Despite being described in 1938 as the microscopic appearance of cysts in the pancreas,[4] 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.[5]

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:

Treatment

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.[1]

Related structures

A pseudocyst is collection without a distinct membrane.

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

References

  1. ^ 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. 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. 
  2. ^ Parapelvic cyst
  3. ^ Pericardial cyst
  4. ^ Anderson, D.H. (1938). "Cyst leiesic fibrosis of the pancreas and its relation to celiac disease". Am J Dis Child 56: 344–399. 
  5. ^ 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. 

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