title: Multifocal osteosarcoma: a case report with review of the literature.
abstract: Multifocal osteosarcoma with unique patho-biological features in a 23-year old white male is reported. The natural history and classification of multiple osteosarcomas are reviewed. A proposal is presented for evaluation of the multicentric origin in future cases.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001859:Bone Neoplasms / Q000145:classification / Q000175:diagnosis* / Q000209:etiology; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000145:classification / Q000175:diagnosis* / Q000209:etiology; D012516:Osteosarcoma / Q000145:classification / Q000175:diagnosis* / Q000209:etiology