A CASE OF LEIOMYOSARCOMA WHICH PREOPERATIVELY DIAGNOSED AS MESOSIGMOID ORIGIN

Abstract

We recently experienced a case of abdominal leiomyosarcoma which was preoperatively diagnosed as mesosigmoid origin. A 66-year-old woman was admitted to the department because of a lower abdominal mass. A computed tomography revealed a large solid mass and angiographically it's localization was detected as mesosigmoid. We performed an extirpation of the mass with segmental sigmoidectomy. The tumor was diagnosed as leiomyosarcoma with the pathological and immunohistochemical evaluation.
Leiomyosarcoms originated in the mesenterium are rare, and so far 54 cases have been reported in the Japanese literature including ours.