Abstract
Cancer arising in the ectopic breast tissue is rare. This paper presents a case of apocrine carcinoma of the ectopic breast tissue in the left axillary region. A 66-year-old woman was seen at the hospital because of a left axillary tumor. An excisional biopsy of the tumor revealed apocrine carcinoma without connection to the proper mammary gland. There were no other primary legions in a general exploration and clinical findings were also suggestive of breast cancer. A wide local resection with lymph nodes dissection was carried out. After the operation, a rapid swelling of the left breast occurred. A modified radical mastectomy was performed with a suspicion of a progress of cancer to the mammary gland or latent breast cancer. Histological study of the excised mammary gland revealed no apparent malignancy. She is doing well without any evidence of recurrence, as of 10 months after the second operation.
