[Serous cystadenocarcinoma of the ovary with simultaneous breast metastases. Description of a case]

Metastasis to the breast from extramammary malignancies are rare especially from ovarian carcinoma. We report a case of a 72-year-old woman with a mass in the right ovary and a lump in the left breast together with axillary lymph node enlargement. Both the ovarian and mammary neoplasms were found to be papillary carcinoma with similar immunohistochemical pattern (anti-CA-125: positive; anti-GCDFP-15: negative); some of the axillary lymph nodes showed metastasis with papillary features. On the basis of clinical, morphological and immunohistochemical data we proposed the diagnosis of papillary cystoadenocarcinoma of the ovary with simultaneous metastasis to the breast and axillary lymph nodes.