Hemangiopericytoma with immunohistochemical examination: An autopsy case

Hemangiopericytoma is a rare vascular soft-tissue tumor arising from the pericytes adjacent to capillaries. In this case report a semi-solid mass (5.5×5.0×3.5cm) originating from the greater omentum was detected at autopsy. Histopathologically, the tumor had a number of capillaries and dense spindle-shaped tumor cells that proliferated around the blood vessels. Histological and immunohistochemical findings confirmed a diagnosis of hemangiopericytoma. We report a case of hemangiopericytoma arising in the greater omentum and review the literature.