A case of breast cancer originating from accessory breast gland tissue is to be presented. Treatment included the subcutaneous removal of the upper half of the mammary gland and the dissection of axillary lymphnodes. As the incidence of aberrant breast carcinoma is rare, a definite prognostic conclusion can not be made at this point. But follow up (5 years) in our case without recurrence will prove that it is enough when the masses were
not palpable within the breast.