Cystic Follicles and Follicle Cysts of the Ovary: Understanding Your Pathology Report

by Emily Goebel, MD FRCPC
March 9, 2023


What are cystic follicles and follicle cysts in the ovary?

Cystic follicles and follicle cysts are related non-cancerous changes commonly seen when the ovary of a reproductive-age woman is examined under the microscope. Both are created by the growth of a normal structure called a follicle that did not release its ovum (egg) during the menstrual cycle. As the follicle grows, an open space called a cyst develops in the center of the follicle.

What is the difference between a cystic follicle and a follicle cyst?

A cyst that measures less than 3 cm is called a cystic follicle. A cyst that measures more than 3 cm in size is called a follicle cyst.

What are the symptoms of a cystic follicle or follicle cyst in the ovary?

Cystic follicles in the ovary generally do not cause symptoms. However, a large follicle cyst can rupture and cause pelvic pain.

A+ A A-