A functional ovarian cyst is a fluid-filled sac on your ovary. Most of these cysts are harmless and will go away on their own. But some may rupture, twist, or bleed, which can be very painful.
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