Why surgical oncology?
D000293:Adolescent; D003131:Combined Modality Therapy; D006801:Humans; D008113:Liver Neoplasms / Q000556:secondary / Q000601:surgery; D008175:Lung Neoplasms / Q000556:secondary / Q000601:surgery; D009369:Neoplasms / Q000601:surgery*; D012516:Osteosarcoma / Q000188:drug therapy / Q000601:surgery; D012008:Recurrence; D013274:Stomach Neoplasms / Q000188:drug therapy / Q000601:surgery