By Gary M. White, MD

Accessory Breast Tissue
A soft growth in the axilla of a young woman that had been growing over several months.

Accessory breast tissue is the development of breast tissue in unusual areas, most commonly in the axilla, but it may occur anywhere.


The development of a soft lump in one or both axilla in a young woman is most typical. It may appear in pregnancy or anytime during the young adult years. Rarely breast diseases, e.g., fibrocystic disease or even cancer, can develop.


Excision by a plastic surgeon is usually done.

Additional Pictures

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Breast carcinoma occurring in accessory breast tissue. Indian J Dermatol Venereol Leprol 2015;81:422-4

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