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Ovarian Cysts

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Ovarian Cysts Definition

Definition

The ovaries make eggs and female hormones. An ovarian cyst is a fluid-filled sac in the ovary. During the menstrual cycle, it is normal for the ovaries to make cysts. The largest of these normal cysts is usually less than an inch (2.5 cm). If you're taking birth control pills, then you usually do not form cysts larger than this size. Most cysts are small and benign. (Benign means that they are not cancerous). But, the larger ones can cause pain and other problems. When there is sudden and severe pain due to a cyst, it may because of:

  • Bleeding—blood irritates the surrounding tissue and causes pain
  • Torsion—the cyst twist around, disrupting blood flow to the ovary

One or many ovarian cysts can form.

Close Up of Ovary and Fallopian Tube

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© 2009 Nucleus Medical Art, Inc.

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