Silva SR, et al. - Data were analyzed to estimate the overall survival (OS) in cases with base of tongue (BOT) cancer treated with external beam radiation therapy (EBRT) plus brachytherapy (BT). Researchers recorded OS of 69.6%, 77.1%, and 63.7% for candidates treated with EBRT (n=27,954), EBRT + BT (n=209), or BT alone (n=154), respectively at 3 years. The instantaneous hazard of death for individuals receiving EBRT + BT was 25% lower as compared to subjects receiving only EBRT on multivariable analysis.