title: [Contribution of ultrastructure to the diagnosis of hemangiopericytomas. Apropos of 2 cases].
mesh_terms: D000293:Adolescent; D000368:Aged; D001859:Bone Neoplasms / Q000175:diagnosis / Q000648:ultrastructure*; D005260:Female; D006393:Hemangiopericytoma / Q000175:diagnosis / Q000648:ultrastructure*; D006801:Humans; D006811:Humerus; D008297:Male; D013977:Tibia
vernacular_title: Apport de l'ultrastructure au diagnostic des hémangiopéricytomes. A propos de deux observations.