Table 1.

Patient and disease characteristics

Patient and Disease Characteristics	No (%)
Age Median (range)	48.5 (18–80)
Gender
Male	177 (77)
Female	53 (23)
Histology
WHO type 1	3 (1.3)
WHO type 2.1 undifferentiated	77 (33.6)
WHO type 2.2 differentiated	112 (48.7)
WHO type 2 NOS	37 (16.1)
WHO type 3 basaloid	1 (0.4)
AJCC 7th Stage
I/II/III/IV	30 (13)/77 (33.5)/78 (33.9)/45 (19.6)
T stage
1/2/3/4	106 (46.1)/61 (26.5)/34 (14.8)/29 (12.6)
N stage
0/1/2/3	59 (25.7)/86 (37.4)/66 (28.4)/19 (8.3)
RT modality
HT	155 (67.4)
VMAT	75 (32.6)
Treatment factors
RT alone	38 (16.5)
NACT+RT/NACCRT	169 (73.5)
CCRT	23 (10)
Sinusitis
Pre-radiation sinusitis
No	105 (45.7)
Yes	125 (54.3)
Post-radiation sinusitis
No	123 (53)
Yes	107 (47)

Abbreviations: VMAT volumetric modulated arc therapy, HT helical tomotherapy, NACT neoadjuvant chemotherapy, NACCRT neoadjuvant chemotherapy followed by concurrent chemoradiotherapy, CCRT concurrent chemoradiotherapy