Fibroadenoma of the ectopic breast of the axilla.

Polymastia is a term that is used to describe the presence of more than two breasts in human beings. It is synonymous with supernumerary or accessory breast tissue. Ectopic breast tissue (EBT) may occur any where along the primitive embryonic milk lines, which extend from the axilla to the groin, and may occur unilaterally or bilaterally. In the EBT any disease can develop that affects the normal breast, including fibroadenoma. Since publications describing this anomaly are rare, we decided to report a case of fibroadenoma in axillary breast tissue.