A Case Report of Malignant Hemangiopericytoma of the Sacral Region

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A case of malignant hemangiopericytoma of the sacral region in a 25 years old male was described.He was addmitted to our hospital with chief complaint of severe sacral pain and numbness of the bilateral lower extrimities.Rentgenograms revealed a fist-size lytic lesion at the sacrum, angiographically, malignant findings such as hypervascularity, tumor stain were observed.The biopsy was performed for the purpose of the histological diagnosis, microscopically, the tumor possessed a rich vascular component of capillary-sized blood vessels with epitheloid cells (pericytes) closely packed between and around the vessels.Reticulum stain showed the general pattern of the reticulum sorrounding groups of cells rather than the individual cell.He received cobalt 60 beam radiation (total 7, 000 rad) but failed to respond to this therapy, chemotherapy (Ifosfamide total 10g) given recently to him intravenously seemed to be effective.