Fig. 5

Kaplan-Meier curves regarding a local control with regard to the interval between last tumor resection and start of radiotherapy with a postoperative interval of 12 weeks; b local control with regard to the interval between last tumor resection and start of radiotherapy with a postoperative interval of 1 year; c local control with regard to macroscopic tumor before the start of radiotherapy. Time interval refers to time since start of radiotherapy. Log rank values refer to the whole observation period. Number of patients at risk detailed below the corresponding curves