Treatment of elderly patients with advanced stage III-IV oropharyngeal squamous carcinoma with intensity modulated radiotherapy (IMRT) using RapidArc® or Helical Tomotherapy® at a dose of 70 Gy in 33 fractions to the PTV (GTV) and 59.4 Gy in 33 fractions to the first disease-free lymphatic relay bilaterally as well as a combination Cisplatin chemotherapy at a reduced dose.