Cystectomy or ovarian cyst removal is a surgical procedure that is done to remove a cyst (fluid-filled sac) from your ovary or its surface. Women have 2 ovaries – each one about the size and shape of an almond, and they are located in the pelvis, one on either side of the uterus. The ovaries have 2 functions, which is to produce eggs (ova) and female hormones. Eggs (ova) that develop and mature in the ovaries are released during each monthly cycle in the childbearing years. Any ovarian follicle larger than 2cm is considered an ovarian cyst. There are often no signs or symptoms, but ovarian cysts can sometimes cause pain and bleeding. If the cyst is over 3-4cm, especially if persistent or symptomatic or look suspicious of abnormality, surgery may be needed.