A Case of Granular Cell Tumor of the Stomach

Takeo Nishimori, Satoru Kunito, Zensuke Yanagi, Kanji Tokura, Kenzo Asada, Jun Takebayashi, Isao Tanaka¹⁾, Mitsuru Hatayama²⁾, Michio Sowa³⁾

Department of Surgery, Department of Pathology¹⁾, Department of Internal Medicine²⁾, Izumi City Hospital
First Department of Surgery, Osaka City University Medical School³⁾

A rare case of a granular cell tumor of the stomach is reported. A 39-year-old woman visited our hospital in March, 1985 because of the epigastric pain. Radiologic and endoscopic examination of gastrointestinal tract revealed a protruding and semispherical lesion with a clear boundary and smooth surface in the posterior wall of the middle body of the stomach. The lesion had a small depression at the top of the tumor and a bridging fold. The diagnosis was a submucosal tumor of the stomach. Gastrectomy was performed and the resected specimen showed a protruding and semispherical lesion, 18×13 mm in diameter, 7 mm in height. A perpendicular section of the tumor was a yellowish-white and clearly lined submucosal mass. Histologically, it was a granular cell tumor, which might be derived from Schwann cell by immunohistochemical study. The postoperative course was uneventful. Granular cell tumors usually arise in the skin or soft tissue and rarely occur in the gastrointestinal tract, especially in the stomach. As far as we know, this is the 9th case in Japan.

Key words
granular cell tumor of the stomach

Reprint requests
Tekeo Nishimori First Department of Surgery, Osaka City University Medical School
1-5-7 Asahi-machi, Abeno-ku, Osaka, 545 JAPAN

Accepted
September 12, 1990

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