Inclusion cysts are the most common cysts of the vulva. The vulva is the area that contains the external genital organs. Inclusion cysts may also develop in the vagina. They may result from injuries, such as tears caused during delivery of a baby. When the vulva is injured, tissue from its surface (epithelial tissue) may be trapped under the surface. Some inclusion cysts develop on their own.
External Female Genital Organs
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Epidermal cysts may develop when the ducts to sebaceous glands become blocked. Secretions from these glands then accumulate under the skin’s surface.
Both of these cysts eventually enlarge and sometimes become infected. Infected cysts may be red and tender and make sexual activity painful.
Cysts that do not become infected usually cause no symptoms, but they occasionally cause irritation. They are white or yellow and usually less than 1/2 inch (about 1 centimeter) in diameter.
Vaginal inclusion cysts are usually small and do not cause symptoms.
By permission of the publisher. From Spitzer M, Mann M. In Atlas of Clinical Gynecology: Gynecologic Pathology. Edited by M Stenchever (series editor) and B Goff. Philadelphia, Current Medicine, 1998. (Courtesy of the International Society for the Study of Vulvar Disease.)
Many cysts are visible on both sides of the vulva.
By permission of the publisher. From Kaufman R, Brown D. In Atlas of Clinical Gynecology: Gynecologic Pathology. Edited by M Stenchever (series editor) and B Goff. Philadelphia, Current Medicine, 1998.
Diagnosis
A pelvic examination
Treatment
Removal of the cyst or cysts
If cysts cause symptoms, they are removed. If women have only one cyst, a local anesthetic is injected to numb the site. If women have several cysts, clinicians may use a regional anesthetic to numb a larger area or a general anesthetic to cause loss of consciousness.
