Abstract
A very rare case of leiomyosarcoma arised in the mesentery has been reported with a review of the literature in Japan. A 72-year-old man visited our clinic due to upper abdominal pain. A fist-sized tumor was found in the upper left abdomen. The tumor mass could be visualized as a clear marginal and internal heterogeneous shadow by computed tomography. Superior mesenteric angiographic findings revealed an irregular tumor stain in the peripheral jejunal artery. On laparotomy, the tumor was found to occur in the jejunal mesentery and could be removed without injurying the intestine. Plenty of the peritoneal dissemination were found simultaneously, most of them being removed. The case was diagnosed as leiomyosarcoma from pathological findings. The patient died on the 78th postoperative day in spite of chemotherapy. The mesenteric leiomyosarcoma is a very rare disease and only 23 cases, including this case, have been reported.We have difficulties in the early diagnosis of the disease, and when it is detected, the tumor often becomes too huge to resect curatively. The prognosis is poor. Postoperative chemotherapy and radiotherapy can not yield favorable response to the patients, and only effective strategy may lie in aggressive resection of the tumor.
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