Abstract
Primary omental tumors are rare. We report a very rare case of primary omental leiomyoblastoma presenting with intraabdominal hemorrhage with a discussion on the literature. A 43-year-old male, complaining of abdominal pain, visited a nearly physician and was referred to the hospital. On admission, abdominal examination revealed severe tenderness in the upper abdomen, and a tumor of infant's head size could be palpated. Abdominal ultrasonography and CT revealed a giant tumor, comprising of the solid and partially cystic mass, and retention of ascites in the abdominal cavity. Abdominal paracentesis revealed hemorrhagic ascites. Because of suspicion of bleeding from the abdominal tumor, emergency laparotomy was performed. Laparotomy showed an accumulation of blood in the peritoneal space, and a tumor being covered with the omentum with enlarged blood vessels. Macroscopic invasions and metastases were not found, and the primary tumor was resected with the omentum. The excised tumor was 18×15×7 cm in size, and weighed 1150 g. Histopathologically, it was a primary omental leiomyoblastoma.
The patient is disease free at present.
