Hemangiopericytoma of Buccal Mucosa: Report of a Rare Case with Review of Literature

Hemangiopericytoma is a rare vascular neoplasm, which arises from specialized cells (pericytes) around the walls of blood vessel. About 50% of hemangiopericytoma in the series of Stout occurred in the oral cavity and pharynx. Under the World Health Organization (WHO) classification, hemangiopericytoma and solitary tumors of the soft tissues are regarded as features of the same entity in the soft tissue fascicle. We report here a case of a 60-year-old man who presented with a painless pedunculated growth associated with right-buccal mucosa of approximately 4 cm diameter. The lesion was completely removed by wide surgical resection. Microscopic examination revealed highly packed oval cells around thin walled endothelial lined vascular channels. Neoplastic cells expressed strong immunopositivity for smooth muscle actin, CD34, CD31.These findings were consistent with the diagnosis of Hemangiopericytoma. Because of the rarity and unpredictable biological behavior of these tumors, complete follow-up is always