Our Cysts Main Article provides a comprehensive look at the who, what, when and how of Cysts
Definition of Cysts
Cysts: Cysts are abnormal, closed sac-like structures within a tissue that contain a liquid, gaseous, or semisolid substance. Cysts can occur anywhere in the body and can vary in size. The outer, or capsular, portion of a cyst is termed the cyst wall. Last Editorial Review: 6/14/2012 Back to MedTerms online medical dictionary A-Z List 
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