Editor's Note: In May 2026, the Endocrine Society and other international experts officially renamed polycystic ovary syndrome (PCOS) polyendocrine metabolic ovarian syndrome (PMOS). This change ...

A ruptured ovarian cyst can cause sudden abdominal or pelvic pain, bleeding, nausea, or vomiting. The most common type ruptures during ovulation to release an egg, and some cysts may rupture without ...

Ovarian cysts are sacs or pockets of fluid that form on the ovaries. There are two types of cysts: simple and complex. These are fluid-filled cysts that have no solid features. They are often either a ...

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