A Ruptured Small Cystiform Gastrointestinal Stromal Tumor of the Small Intestine Related to Peritonitis

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  • 破裂のため腹膜炎を呈した小囊胞性小腸gastrointestinal stromal tumorの1例

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Abstract

We report a case of a ruptured small cystiform gastrointestinal stromal tumor (GIST) of the small intestine related to the peritonitis. An 87-year-old woman complaining of abdominal fullness and lower abdominal pain was brought by an ambulance. CT scan showed a cystiform lesion with fluid collection just attached to the ileum in the pelvis, accompanied by ascites and peritonitis (high density CT value of the mesentery). Then emergency laparotomy was performed, and the operative findings showed bloody ascites and a ruptured cystiform tumor (about 5 cm in diameter) arising from the ileum. We performed partial resection of the ileum, intraperitoneal irrigation and drainage procedure. Histologically, section shows a proliferation of spindle cells and epithelioid cells with sheets or interlacing pattern and immunohistohemically, tumor cells are positive for c-kit. Consequently the tumor was diagnosed as GIST (gastrointestinal stromal tumor) of the small intestine. The patient has survived for a year disease-free after the operation.

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