[Aberrant breast carcinoma (Clinical case)]

A case of carcinoma on aberrant mammary tissue associated with fibrocystic mastopathy and masked carcinoma of the breast with lymph node metastasis at the homolateral axilla only is reported. It is recommended that all subcutaneous nodes in zones surrounding the breast should be removed. If they prove carcinomatous, Halsted's radical mastectomy of the homolateral breast should be performed.