title: [Parosteal osteosarcoma: report of 18 cases].
mesh_terms: D000293:Adolescent; D000328:Adult; D000671:Amputation, Surgical; D001859:Bone Neoplasms / Q000601:surgery*; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D012516:Osteosarcoma / Q000601:surgery*; D010521:Periosteum