Operational Obstetrics & Gynecology

Supernumerary Breasts

Supernumerary breasts are relatively common. They are found along the "milk line," extending from the axilla to the groin.

Most of them are not noticed clinically until pregnancy occurs. Then, under the influence of the pregnancy hormones, the breasts enlarge in preparation for lactation. It is at this time that soft swellings along the milk line occur, representing supernumerary breasts. During lactation, the extra breasts may produce milk.

Although this image shows a supernumerary breast low in the abdomen, the two most common places for them are in the axilla and directly underneath the normal breast.

These are not dangerous and are generally ignored. If they prove to be a cosmetic problem, they can be removed surgically.

Supernumerary Nipples

More common than supernumerary breasts are supernumerary nipples. Like extra breasts, these are located in the milk line and are not dangerous.

Unless they are large, they are usually not noticed until a pregnancy. At that time, like the normal nipples, they enlarge and darken.

Home ╖ Introduction ╖ Medical Support of Women in Field Environments ╖ The Prisoner of War Experience ╖ Routine Care ╖ Pap Smears ╖ Human Papilloma Virus ╖ Contraception ╖ Birth Control Pills ╖ Vulvar Disease ╖ Vaginal Discharge ╖ Abnormal Bleeding ╖ Menstrual Problems ╖ Abdominal Pain ╖ Urination Problems ╖ Menopause ╖ Breast Problems ╖ Sexual Assault ╖ Normal Pregnancy ╖ Abnormal Pregnancy ╖ Normal Labor and Delivery ╖ Problems During Labor and Delivery ╖ Care of the Newborn

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Operational Obstetrics & Gynecology - 2nd Edition
The Health Care of Women in Military Settings
CAPT Michael John Hughey, MC, USNR
NAVMEDPUB 6300-2C
January 1, 2000

This web version of Operational Obstetrics & Gynecology is provided by The Brookside Associates Medical Education Division. It contains original contents from the official US Navy NAVMEDPUB 6300-2C, but has been reformatted for web access and includes advertising and links that were not present in the original version. This web version has not been approved by the Department of the Navy or the Department of Defense. The presence of any advertising on these pages does not constitute an endorsement of that product or service by either the Department of Defense or the Brookside Associates. The Brookside Associates is a private organization, not affiliated with the United States Department of Defense. All material in this version is unclassified.

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