Contents
1.1 Cancer
1.2 Head and neck cancer
1.2.1 Definition
1.2.2 Epidemiology
1.2.3 Etiology
1.2.4 Methods to study a head and neck tumor
1.2.5 Staging
1.2.6 Management
1.2.7 Prognosis
1.2.8 Quality of life
1.3 Radiotherapy for head and neck cancer and reasons for its failure
1.3.1 Treatment characteristics
1.3.2 Patient characteristics
1.3.3 Tumor biology
1.5 References