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| Cyst Classification and external resources |
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| MedlinePlus | 003240 |
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| MeSH | D003560 |
A cyst is a closed sac having a distinct membrane and division on the nearby tissue. They may contain air, fluids, or semi-solid material. A collection of pus is called an abscess, not a cyst. Once formed, the cyst could go away by itself or will have to be removed using surgery.
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Locations
- Arachnoid cyst (between the surface of the brain and the cranial base or on the arachnoid membrane)
- Baker's Cyst (behind the knee joint)
- Bartholin's cyst
- Breast cyst
- Chalazion cyst (eyelid)
- Cysticercal cyst (the larval stage of Taenia sp.)
- 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)
- Glial Cyst (in the brain)
- Gartner's duct cyst (vaginal or vulvar cyst of embryological origin)
- Hydatid cyst (larval stage of Echinococcus granulosus (tapeworm))
- 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)
- Liver cystic disease
- Meibomian cyst (eyelid)
- Nabothian cyst (cervix)
- Ovarian cyst (ovaries, functional and pathological)
- Paratubal cyst (fallopian tube)
- Pilonidal cyst (skin infection near tailbone)
- Renal cyst (kidneys)
- Polycystic ovary syndrome
- Radicular cyst (associated with the roots of non-vital teeth)
- Sebaceous cyst (sac below skin)
- Tarlov cyst (spine)
- Vocal fold cyst
Cystic fibrosis
Despite being described in 1938 as involving the microscopic appearance of cysts in the pancreas[1] 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.[2]
Benign vs malignant
Many cysts in the body are benign (functional), the result of plugged ducts or other natural body outlets for secretions. However, a few are tumors or are produced within tumors, and are potentially malignant:
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
- ^ Anderson, D.H. (1938). "Cystic fibrosis of the pancreas and its relation to celiac disease". Am J Dis Child 56: 344–399.
- ^ 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:. PMID 9044117.
External links
- "Cyst Symptoms and Causes" by Melissa Conrad Stöppler, MD and William C. Shiel, Jr., MD, FACP, FACR.
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Wikipedia content modification information:
- This page was last modified on 25 August 2008, at 21:23.
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