title: Lesson of the month (1).
authors.forename: Mick
authors.initials: M
authors.lastname: Button
mesh_terms: D000368:Aged; D001921:Brain / Q000528:radiation effects*; D001927:Brain Diseases / Q000175:diagnosis / Q000209:etiology*; D002294:Carcinoma, Squamous Cell / Q000473:pathology / Q000532:radiotherapy*; D004307:Dose-Response Relationship, Radiation; D005770:Gastrointestinal Neoplasms / Q000473:pathology / Q000532:radiotherapy*; D006801:Humans; D008297:Male; D011379:Prognosis; D011832:Radiation Injuries / Q000175:diagnosis / Q000209:etiology*