Cyst

Healthwise
By Jeannette Curtis; Caroline Rea, RN, BS, MS

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A cyst is a saclike structure in the body. Cysts usually are filled with fluid, which may be blood, clear fluid, or pus.

A cyst can be normal, abnormal, or, in rare cases, cancerous. In some cases, a cyst may be drained either with a needle or by cutting it open, or it may be removed entirely.

Author:Jeannette Curtis
Caroline Rea, RN, BS, MS
Medical Review:
Last Updated: 05/25/2007