An ovarian cyst is a fluid-filled sac that develops on an ovary. They're very common and do not usually cause any symptoms. Most ovarian cysts occur naturally and go away in a few months without needing any treatment.

What is the main cause of ovarian cyst?

The main causes of ovarian cysts may include hormonal imbalance, pregnancy, endometriosis, and pelvic infections. Ovarian cysts are sacs of fluid that form on either the ovary or its surface. Women possess two ovaries which sit on either side of the uterus.

Are ovarian cysts OK?

Many women have ovarian cysts at some time. Most ovarian cysts present little or no discomfort and are harmless. The majority disappears without treatment within a few months. However, ovarian cysts — especially those that have ruptured — can cause serious symptoms.