Functional Ovarian Cysts
What is a functional ovarian cyst?
A functional ovarian cyst is a sac that forms on the surface of a woman's ovary during ovulation. It holds a maturing egg. Usually the sac goes away after the egg is released. If an egg is not released, or if the sac closes up after the egg is released, the sac can swell up with fluid.
Functional ovarian cysts are different from ovarian growths caused by other problems, such as cancer. Most of these cysts are harmless. They do not cause symptoms, and they go away without treatment. But if a cyst becomes large, it can twist, rupture, or bleed and can be very painful.
What causes functional ovarian cysts?
A functional ovarian cyst forms because of slight changes in the way the ovary makes or releases an egg. There are two types of these cysts:
What are the symptoms?
Most functional ovarian cysts do not cause symptoms. The larger the cyst is, the more likely it is to cause symptoms. Symptoms can include:
Some functional ovarian cysts can twist or break open (rupture) and bleed. Symptoms include:
If you have these symptoms, call your doctor right away. Some ruptured cysts bleed enough that treatment is needed to prevent heavy blood loss.
How are functional ovarian cysts diagnosed?
Your doctor may find an ovarian cyst during a routine pelvic exam. He or she may then use a pelvic ultrasound to make sure that the cyst is filled with fluid. In a few months, after you have been through 2 or 3 menstrual cycles, your doctor will recheck you. The cyst is likely to go away on its own during this time.
If you see your doctor for pelvic pain or bleeding, you'll be checked for problems that may be causing your symptoms. Your doctor will ask you about your symptoms and menstrual periods. He or she will do a pelvic exam and may do a pelvic ultrasound.
How are they treated?
Most functional ovarian cysts go away without treatment. Your doctor may suggest using heat and medicine to relieve minor pain.
If a large cyst bleeds or causes severe pain, you can have surgery to remove it.
Your doctor may suggest that you take birth control pills, which stop ovulation. This may prevent new cysts from forming.
Frequently Asked Questions
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