A Case Report of Benign Fibrous Histiocytoma of the Sigmoid Colon

Katsunori Tauchi¹⁾²⁾, Shyuuichiro Suzuki¹⁾, Takuya Nagata¹⁾²⁾

¹⁾Department of Surgery, Itoigawa General Hospital
²⁾The Second Department of Surgery, Toyama Medical and Pharmaceutical University, School of Medicine

A case of primary benign fibrous histiocytoma (BFH) of the sigmoid colon is reported. The patient, a 63-year-old man, complained of high fever and abdominal pain. A barium enema, endoscopic study, computed tomography, magnetic resonance imaging and abdominal angiography revealed an intramural mass in the sigmoid colon, but we could not distinguich between a maligmant tumor and a severe inflammatory change. A sigmoidectomy and partial resection of the ileum was performed. Microscopically, spindle-shaped cells with a storiform pattern were seen from the subserosa to the muscular layer. They had immunohistochemical characteristics of histiocytes, few mitoses and mild atypia. The histological diagnosis was BFH. The postoperative course was uneventful and he showed no sign of recurrence. There are 15 previous reports of malignant fibrous histiocytoma of the gastrointestinal tract, but no report of BFH of the gastrointestinal tract was found in the literature. This is the first reported case of primary BFH in the gastrointestinal tract.

Key words
benign fibrous histiocytoma, malignant fibrous histiocytoma, sigmoid colon

Reprint requests
Katsunori Tauchi Second Department of Surgery, Toyama Medical and Pharmaceutical University School of Medicine
2630 Sugitani, Toyama, 930-01 JAPAN

Accepted
February 10, 1993

To read the PDF file you will need Abobe Reader installed on your computer.