RATIONALE: Tests that measure how much saliva is made, hearing, swallowing, voice function, and quality of life may improve the ability to plan treatment for patients with advanced head and neck cancer and may help doctors find better ways to treat the cancer. PURPOSE: This clinical trial is studying the side effects of high-dose intensity-modulated radiation therapy in treating patients with advanced head and neck cancer.
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Stimulated saliva production at 6 months after completion of intensity-modulated radiotherapy (IMRT)
Comparison of salivary function of patients in current study to salivary function of historical controls