Twice-a-day radiotherapy for head and neck cancer: the Catalan Institute of Oncology experience.

Purpose: The purpose of this work is to evaluate the contribution of hyperfractionated radiotherapy (RT) in head and neck cancer by sub-localisation.

Patients And Methods: From 1992 to 1999, 318 patients with squamous head and neck tumours treated by hyperfraction RT were analysed according to their sub-localisation and stage. Fractions used were 1.