“…Late bowel toxicity manifests as diarrhea, bowel stricture, perforation, or hemorrhage and may also be irreversible. The tolerance dose, which is defined as the bowel dose that gives a 5% risk of late toxicity at 5 years, is estimated to be around 45-50 Gy [82], and irradiation of larger volumes is associated with increased toxicity [83]. When patients with lung cancer are treated with Exploit the postradiation enhancement of radiation effect by AA.…”