Results:
The incidence of fatal bleeding after radiotherapy was 2.3% (3/130). The primary site of the three cases were all the pharyngeal recess, with more than 270º carotid artery invasion. Patients with hemoglobin levels >110 g/L had a higher PFS, DMFS and OS than with that ≤110 g/L (P<0.05). Multivariate analysis showed that the EGFR inhibitor was an independent risk factor for PFS and DMFS, while the lowest hemoglobin level was an independent risk factor for OS.