Pre-operative irradiation for laryngeal and laryngopharyngeal cancers.
D007822:Laryngeal Neoplasms / Q000532:radiotherapy* / Q000601:surgery; D009364:Neoplasm Recurrence, Local; D010610:Pharyngeal Neoplasms / Q000532:radiotherapy* / Q000601:surgery; D012189:Retrospective Studies