A Case Report of Giant Hemangioma of the Stomach

Abstract

A 71-year-old man was admitted to our hospital because of abdominal mass. Upper gastrointestinal series and endoscopy revealed extraventral compression of the stomach. The tumor was found by abdominal computed tomography and nuclear magnetic resonance image, which maximal diameter was about 21cm with multiple cysts. Abdominal angiography showed expanded left gastric artery without staining.
Abdominal surgery was carried out under diagnosis of lesser sac tumor. The resected tumor was 19×17×6cm in size originated from stomach wall especially in subserosa. Massive bloody fluid was noted in the multiple cysts. Histologically, the tumor was mainly composed of large dilated blood-filled vessels lined by flattened endothelial cell, partly including smooth muscle and collagen fiber, which was diagnosed as hemangioma.
One hundred and nineteen cases of gastric hemangiomas have been reported in Japan, including only 10 cases more than 10cm in diameter.