The corpus luteum is formed from the open follicle that released an egg during ovulation. Sometimes, the opening seals back ...

It causes pain on the side of the ovary on which the cyst is if it breaks open. A corpus luteum cyst is less common and forms if the follicle left behind after ovulation does not dissolve and ...

Ovarian cysts are fluid-filled sacs that can form in or on your ovaries. Some cyst types can become large in size and may require surgery. Most ovarian cysts are benign (noncancerous). They ...