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Fifty-two cases of advanced head and neck cancer were treated by 434-MHz radiowave hyperthermia which was combined with cobalt radiotherapy and/or radioactive gold grain implant. Complete resolution of primary and secondary lesions occurred in 94% of cases, and the survival rate after three years was 54%. Retrospective study of comparable series revealed 62.5% resolution rate, and 29% survival after treatment with hyperbaric oxygen and cobalt, while after conventional supervoltage therapy, the resolution rate was 36.5%, and only 19% survived for three years.
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Nelson et al. (1978) studied this question.
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