[Hemangiopericytoma--report of 13 cases].
D000293:Adolescent; D000328:Adult; D002648:Child; D003131:Combined Modality Therapy; D005260:Female; D005500:Follow-Up Studies; D006258:Head and Neck Neoplasms / Q000628:therapy*; D006393:Hemangiopericytoma / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012983:Soft Tissue Neoplasms / Q000628:therapy*