Reducing Xerostomia by Comprehensive Protection of Salivary Glands in Intensity-Modulated Radiation Therapy with Helical Tomotherapy Technique for Head-and-Neck Cancer Patients: A Prospective Observational Study

Table 1

Patients’ characteristics.

Characteristics	No. of patients	%
Age (median range)	49	11-83
Gender
Male	129	73.7
Female	46	26.3
WHO performance status
0	79	45.1
1	96	54.9
Treatment
Induction chemotherapy+	116	66.3
concurrent chemoradiotherapy
Induction chemotherapy+	54	30.9
concurrent chemoradiotherapy+
molecular targeted therapy
Concurrent chemoradiotherapy+	1	0.6
molecular targeted therapy
Concurrent chemoradiotherapy	2	1.1
Radiotherapy alone	2	1.1
Tumor site
Oropharynx	5	2.86
Nasopharynx	128	73.14
Hypopharynx	20	11.43
Larynx	7	4.00
Oral cavity	9	5.14
Nasal cavity and paranasal sinuses	4	2.29
Others	2	1.14
T-stage
T1	17	9.7
T2	61	34.9
T3	37	21.1
T4	38	21.7
T4a	14	8.0
T4b	8	4.6
N-stage
N0	26	14.9
N1	34	19.4
N2	95	54.3
N3	20	11.4
UICC/AJCC (2010)
II	23	13.14
III	60	34.29
IVa	65	37.14
IVb	27	15.43