Hemangiopericytoma, Originating from the Posterior Mediastinum: Report of A Case

후종격동에서 발생한 혈관 외피 세포종: 1례 보고

Hemangiopericytoma is a rare tumor of vascular origin, first described by Stout and Murray in 1942. It is characterized by a proliferation of capillaries, surrounding by a mass of spindle shaped or round cells. A 55 year-old man was admitted with a 2 years history of dull pain on the right upper posterior chest and mild dyspnea on Feb. 1978. On admission, chest PA and right lateral x-ray showed a large well defined homogenous increased density in the right upper posterior chest. Yellowish to brownish colored huge firm mass, which occupied entirely the right superior posterior mediastinum, was removed. The tumor was dense adhesive with right upper & lower lobe and Rt. upper posterior chest wall. The origin of tumor was not obvious. The tumor was confirmed as hemangiopericytoma, locating at the right posterior mediastinum by histopathologic examination. The postoperative course was uneventful, and he was made irradiation therapy after discharge.