title: Hemangiopericytoma: a clinicopathologic and ultrastructure study.
mesh_terms: D000328:Adult; D005260:Female; D006393:Hemangiopericytoma / Q000601:surgery / Q000648:ultrastructure*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012983:Soft Tissue Neoplasms / Q000601:surgery / Q000648:ultrastructure*