Cyst - Definition

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Definition


A cyst defines a pocket fixed onto or in a body tissue or organ, of varying size and structure, it is not connected with the outside. It can contain a gas, a liquid or semi-liquid substance, or rarely a solid. Most cysts are benign, and they can grow in almost all organs, including the liver, kidney, mammary gland, ovary, thyroid, or bone. Some cysts may be malignant and associated with cancer. A biopsy is sometimes performed and studying it helps to understand the nature of the cyst. If the cyst is pathogenic, it can be removed by surgery.