title: Osteosarcoma: Advances in treatment or changing natural history?
mesh_terms: D000671:Amputation, Surgical; D001859:Bone Neoplasms / Q000188:drug therapy / Q000601:surgery / Q000628:therapy*; D005069:Evaluation Studies as Topic; D006801:Humans; D008175:Lung Neoplasms / Q000628:therapy; D009362:Neoplasm Metastasis; D012516:Osteosarcoma / Q000188:drug therapy / Q000601:surgery / Q000628:therapy*