Abstract
Primary neoplasms of the hepato-gastric omentum are uncommon, A 47-year-old male was admitted to our hospital with no complaint, to undergo a health examination. Upper gastrointestinal radiography, gastroscopy, ultrasonography, computed tomography, ERCP and celiac angiography were performed. They revealed an upper abdominal tumor which was solid and spherical, and was in contact with but not continuous with the liver, the pancreas and the stomach. Operative diagnosis was a primary tumor of the hepato-gastric omentum, and histopathologically it was found to be a benign leiomyoma. There have been 32 cases of tumors of the hepato-gastric omentum reported in the Japanese literature. Ten of these cases were of leiomyoma (3 benign and 7 malignant). Confirmation of preoperative diagnosis is very difficult, but ultrasonography, computed tomography and celiac angiography are relatively usuful.
