A Case of Solitary Fibrous Tumor of the Mesentery of the Transverse Colon resected by Laparoscopic Surgery

Hiroyuki Kuge, Hisanori Kashizuka, Takashi Yokoyama, Kiyoshi Kamada, Yukihito Niimi, Keijirou Kawasaki, Mitsutoshi Tatsumi and Hiroshi Maruyama*

Department of Surgery and Department of Pathology*, Hoshigaoka Koseinenkin Hospital

We report treating a solitary fibrous tumor originated in the transverse colon mesentery by laparoscopically. A 72-year-old man admitted for an abdominal mass was found in enhanced computed tomography (CT) to have a 6 cm solid mass adjacent to the transverse colon. An artery branching from the middle colic artery fed a tumor. T1-weighted magnetic resonance imaging (MRI) showed a homogeneous low-intensity mass. Laparoscopic surgery conducted for a suspected mesenchymal tumor arising from the transverse colon found that the tumor had originated in the transverse colon mesentery. We resected the tumor laparoscopically. Histologically, the tumor consisted of spindle cells presenting a "patternless pattern." The labeling index was 6.8%. Immunohistochemical staining was positive for CD34 and bcl-2 and negative for c-kit, α-SMA, vimentin, and desmin. The tumor was definitively diagnosed as a benign solitary fibrous tumor of the transverse colon mesentery.

Key words
solitary fibrous tumor (SFT), mesentery, laparoscopic surgery

Reprint requests
Hiroyuki Kuge Department of Surgery, Kenseikai Dongo Hospital
12-3 Hinode-cho, Yamatotakada, 635-0022 JAPAN

Accepted
March 24, 2010

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