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a-z health information - Symptoms

 

Cyst

Definition

A cyst is a closed pocket or pouch of tissue. It can be filled with air, fluid, pus, or other material.

Considerations

Cysts may form within any tissue in the body. Most cysts is the lungs are filled with air. Cysts that form in the lymph system or kidneys are fluid-filled. Certain parasites, such as trichinosis, dog tapeworm (Toxocara canis), and echinococcus, can form cysts within the muscles, liver, brain, lungs, and eyes.

Cysts are common on the skin. They can develop from a clogged sebaceous glands (acne-related cysts) or form around something stuck in the skin. These cysts are benign (not cancer) but can cause pain and changes in appearance.

Cysts can be drained or removed with surgery depending on the type and location of the growth.

pilonidal dimple is a type of cyst.

References

Stone MS. Cysts. In: Bolognia JL, Jorizzo JL, Schaffer JV, et al, eds.Dermatology. 3rd ed. Philadelphia, Pa:Mosby Elsevier; 2012:chap 110.



 


Review Date: 11/20/2012
Reviewed By: Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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