Abstract
A 72-year-old male who was indicated liver impairment at a medical check-up in August 2006 consulted our hospital. Abdominal CT scan showed a tumor, 5cm in diameter, contacting to the greater curvature of body of the stomach. There were no abnormalities on the gastric mucosa by endoscopic examination. Gastric gastrointestinal stromal tumor was suspected, and the tumor was extirpated by laparoscopic surgery on October 27. The tumor was generated from the transverse mesocolon. Histopathological examination showed proliferation of spindle cells in bundle arrangement, without nuclear fission images. Immunohistochemical studies resulted in c-kit(+), CD34(+), and NSE(+). Thus GIST originating from the transverse mesocolon was diagnosed. We report this rare case of extragastrointestinal stromal tumor (EGIST) together with recent domestic cases and some bibliographical comments.
