[Results of combined hyperthermia and radiotherapy in case of malignant tumors of the head and neck area].

102 patients with prospectively radioresistant malignant tumours of the head and neck area were treated by a combination of hyperthermia and radiotherapy. 92 patients who received a sufficient dose were analysed. 71 of them (77%) developed an improvement of the disease, in 54 cases (59%) a complete remission was achieved. Local recurrences occurred in only 13 cases (24%) within an average of 11 months from the end of treatment. Distant metastases did not exceed usual frequency, and apparently there was no hyperthermia-dependent provocation. Advantages of this combined therapy are better regression of large hyp- and anoxic tumours and good tolerance. Its influence on survival-time, however, seems doubtful.