N83: Noninflammatory disorders of ovary, fallopian tube and broad ligament

N83.0: Follicular cyst of ovary

The ovaries are part of the female genitals. There are two ovaries, one on each side. The ovaries sit low down in the abdomen. Egg cells mature in the ovaries. The egg cells can later develop into a child. The ovaries also produce various messenger substances.

The egg cells mature inside follicles. At ovulation the follicles burst and the egg cell travels down the fallopian tube into the uterus. In your case this follicle has not burst. It has actually grown in size. The follicle has turned into a fluid-filled sac (cyst) inside the ovary.

In most cases these cysts do not cause any problems and clear up without treatment after a while. If the cysts become very large, you may have abdominal pains, for example. The cysts may also affect your periods.