A Case of Ruptured Right Gastroepiploic Artery Aneurysm

* We report an omental hematoma caused by a dissecting rupture of the right gastroepiploic artery. An 85‑ year‑old man visited our hospital complaning of vomiting and abdominal pain. Abdominal CT revealed mas‑ sive ascites without free air. Because the patient demonstrated muscular defense an emergency laparotomy was performed. During the laparotomy a hematoma was found in the right gastroepiploic arterial field of the omentum a partial resection of the omentum was performed. Histological examination revealed the rupture of a dissecting aneurysm in the right gastroepiploic artery.