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The Korean Journal of Pathology 2006;40(2): 156-159.
Histiocytic Sarcoma of Rectum: A Case Report.
Moon Il Park, Kyu Sang Song, Dae Young Kang
Department of Pathology, Chungnam National University School of Medicine, Daejeon, Korea. dykang@cnu.ac.kr
We present a case of a 44 year-old man with histiocytic sarcoma arising from the rectum. Histiocytic sarcoma is a rare type of malignant lymphoma, comprising less than 0.5% of all non-Hodgkin's lymphomas (NHLs). In this case, the tumor was a polypoid mass, measuring 2.5 x 2 cm. On microscopic examination, it was composed of many bizarre multinucleated cells and sheets of xanthomatous histiocytes. There were also areas with spindle cells arranged in a storiform pattern. Extensive metastases to regional lymph nodes were found, and combined adjuvant chemotherapy was administered after complete resection.
Key Words: Sarcoma; Histiocytic lymphoma; Rectum