Nabothian cysts are cysts filled with mucus that look like tiny bumps on the surface of the cervix. They are usually 2 millimeters to 10 millimeters in diameter, and they contain mucus that ranges in color from pale yellow to amber.
In most cases, nabothian cysts occur when new tissue regrows on the cervix after childbirth. This new tissue blocks the openings of the cervix's nabothian glands, trapping their mucous secretion in tiny pockets under the skin. Nabothian cysts are a normal finding on the cervix of women who have had children. They also are seen in menopausal women whose cervical skin has thinned with age. Less often, nabothian cysts are related to chronic cervicitis, a long-term infection of the cervix.
Nabothian cysts also are called nabothian follicles, epithelial inclusion cysts, and mucinous retention cysts.