“…Even when TBI is fractionated and given concurrently with chemotherapy, pneumonitis occurs in about 25% of patients, although fractionation clearly reduces the risk of fatal events. Other acute toxic effects of TBI include parotitis (generally occurring on the second day of treatment) (34,35), nausea and vomiting (which can be prevented with modern anti-emetic agents), dry mouth and mucositis (which typically appear 5-20 days after TBI), diarrhea, fatigue, decreased appetite, erythema, esophagitis, and alopecia (36). Single-dose nonmyeloablative TBI (2 Gy) seems to not be associated with significant acute side effects and is well tolerated (37).…”