Predictors of PEG dependence after IMRT ± chemotherapy for oropharyngeal cancer

OM V9.5 Gy/week and CHT/PEG_policy modulate the risk of early PEG dependence. For longer PEG dependence, larynx V50 (or D_mean) and SC D_mean are highly predictive, suggesting that the fibrosis of constrictors and larynx is the main cause.