Isolated breast metastasis from granulosa cell tumor of the ovary.

Granulosa cell tumors of the ovary are rare neoplasms arising from sex-cord stromal cells. These tumors usually present with stage I disease as they are frequently associated with hormonal effects. Only a small percentage of such tumors metastasize and the common sites of metastasis are lung, liver, and brain. Granulosa cell tumor of ovary metastasizing to breast has never been reported in literature. We present such a case of ovarian granulosa cell tumor with metastasis to the breast, which was the presenting symptom. The patient was treated with total abdominal hysterectomy and bilateral salpingo-oophorectomy which was followed by chemotherapy. The patient is relapse free 2 years after completion of treatment.