Actual Anatomical and Dosimetric Changes of Parotid Glands in Nasopharyngeal Carcinoma Patients during Intensity Modulated Radiation Therapy

Table 1

Patients’ clinical characteristics.

Parameter	Number	%
Gender
Male	28	80%
Female	7	20%
Age	11–80 y (median 44 y)
Tumor stage
I-II	17	48.6%
III-IV	18	51.4%
Cervical lymph node metastasis
No	8	22.8%
Yes	27	77.2%