The results of this study concern the comparison of the clinical effects of adriamycin (ADM) or bleomycin (BLM) alone and combined with local hyperthermia on 15 patients with multiple (29) neck node metastases from head and neck cancers. With repeated low fractional daily doses of drug a significant though transient tumor regression was obtained in 2/8 and in 3/6 of the lesions treated with ADM or BLM alone, respectively. When the drugs were combined with 42-43°C hyperthermia, an overall response, either complete or partial, was seen in all the lesions. Complete regression was observed in 38% (3/8) and 43% (3/7) of the lesions treated with ADM or BLM, respectively, combined with heat. At a 4-month follow-up, 33% (2/6) and 40% (2/5) of the same groups of lesions remained still undetectable. These results suggest that the combined treatment of drugs and local hyperthermia can be advantageously employed in clinical practice for treating local tumors, especially recurrences in previously irradiated areas.
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