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    Functional Ovarian Cyst

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    Illustration copyright 2000 by Nucleus Communications, Inc. All rights reserved. http://www.nucleusinc.com

    An ovarian cyst is a fluid-filled sac (follicle) that contains a maturing egg. It forms on the ovary's surface, then disappears not long after it releases the egg. If a mature egg is not released or if the sac reseals after releasing the egg, the sac can swell up with fluid, forming a functional ovarian cyst.

    Most functional ovarian cysts do not cause symptoms and go away by themselves. But they do sometimes rupture, twist, or bleed, which can cause severe pelvic pain.

    ByHealthwise Staff
    Primary Medical ReviewerSarah Marshall, MD - Family Medicine
    Specialist Medical ReviewerKirtly Jones, MD - Obstetrics and Gynecology

    Current as ofMarch 12, 2014

    WebMD Medical Reference from Healthwise

    Last Updated: March 12, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

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