Epidural Hemorrhage Secondary to Cavernous Hemangioma of the Petrous Portion of the Temporal Bone

Abstract

Hemangiomas of the bone are rare. They constitute from 1 to ~ per cent of all bone tumors. The most common site of hemangiomas is in the vertebrae, those of the skull being second in frequency. In the skull they are usually found in the calvarium, involving the parietal and frontal lobes, m There are two types of hemangiomas. The capillary variety is made up of closely packed capillaries which are lined by a single layer of nearly cuboidal endothelial cells. The more common cavernous type is composed of larger blood-filled spaces which are lined by a single layer of flattened endothelial cells. Elastic fibers and smooth muscle are usually not present in the walls of these tumors and the amount and character of the fibrous supporting stroma vary greatly? CASE REPORT