A Case of Rectal Carcinoid Tumor Metastatic to the Breast

Nobuyoshi Momiyama, Takashi Ishikawa, Yasushi Ichikawa and Hiroshi Shimada

Department of Gastroenterological Surgery, Yokohama City
University Graduate School of Medical Science

We report a case of rectal carcinoid tumor metastasis to the breast. A 54-year-old woman noticing a mass in the left breast had suffered rectal carcinoid tumor and liver metastasis 7 years earlier. The treatment she received included rectal resection, 3 liver resections, and lymph node dissection in the pelvis. Pathological examination of the rectal tumor showed mp, ly2, v2, n2 (5/7). The breast mass in the upper inner quadrant measured 4.0 cm in diameter. Aspiration biopsy cytology showed Class V, suggesting carcinoid tumor. The breast mass was excised and a pathological examination demonstrated metastatic carcinoid tumor of the breast through confirmation of histological similarities to the rectal carcinoid tumor. The tumor cells in the breast showed negative immunohistochemical staining for ER/PgR.

Key words
carcinoid, rectum, metastasis

Reprint requests
Nobuyoshi Momiyama Department of Gastroenterological Surgery, Yokohama City University Graduate School of Medical Science
3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004 JAPAN

Accepted
December 19, 2003

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