Table 2.

Major late toxicities in patients with T3‐4 nasopharyngeal carcinoma

Late toxicity	No. of patients (%) by grade 0	No. of patients (%) by grade 1	No. of patients (%) by grade 2	No. of patients (%) by grade 3	No. of patients (%) by grade 4
Temporal lobe injury	149 (89.8)	13 (7.8)	3 (1.8)	0	1 (0.6)
Optic nerve disorder	195 (97.5)	3 (1.5)	0	1 (0.5)	1 (0.5)
Ototoxicity	156 (78.0)	23 (11.5)	16 (8.0)	3 (1.5)	2 (1.0)
Xerostomia	44 (22.0)	133 (66.5)	20 (10.0)	3 (1.5)	0
Spinal cord injury	200 (100)	0	0	0	0
Brainstem injury	200 (100)	0	0	0	0