Primary leiomyosarcoma of the greater omentum: CT findings.

Three cases of primary leiomyosarcoma arising from the greater omentum are described. On CT the tumors were multilobulated, flat, and pancake-like, with enhancing solid and multicystic densities. The masses in all cases were located in the most anterior part of peritoneal cavity. These CT findings are useful in the preoperative diagnosis of omental leiomyosarcoma.