A CASE OF LEIOMYOSARCOMA OF THE DUODENUM MIMICKING PANCREATIC TUMOR

Abstract

A 58-year-old man visited our clinic because of right upper abdominal pain. An upper GI series revealed lateral displacement of the antrum and the first portion of the duodenum by a large mass, but ulcer was not detected. The mass was disclosed the continuity to the pancreas by CT. Celiac arteriography demonstrated hypervascularity and mottled tumor stain at the right side of the pancreatic arcade and the tumor was fed by superior pancreatic-oduodenal artery. Pancreatic or duodenal tumor was suspected and operation was performed. Laparotomy revealed the tumor arising from the first and second portion of the duodenum and growing extraluminally, 8×5 cm in size, partially invading the pancreas and gastroduodenectomy was performed. Histological diagnosis of the operated specimen revealed leiomyosarcoma of the duodenum.