Site-specific phase I, II trials of hyperthermia at Kyoto University

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Abstract
Site-specific phase I, II trials of locoregional hyperthermia undertaken at Kyoto University are briefly reviewed. Thermometry analysis demonstrated the usefulness of RF (radiofrequency) capacitive heating equipment in the treatment of various subsurface or deep-seated tumours including locally advanced breast cancers, soft tissue tumours, lung cancers involving the chest wall, liver tumours, unresectable or recurrent colorectal cancers, and invasive urinary bladder cancers. The difficulty in heating whole tumour volume or hypervascular tumours to therapeutic temperatures was also shown. Non-randomized trials for locally advanced breast cancers, unresectable or recurrent colorectal cancers and invasive urinary bladder cancers demonstrated a higher response rate in thermoradiotherapy than in radiotherapy alone. The complications associated with treatment were not generally serious except for chronic bowel damages in a trial for colorectal cancers. These promising phase I, II trials encourage the future phase III trials.