• Int. J. Radiat. Oncol. Biol. Phys. · Sep 1995

    Clinical Trial

    Interstitial hyperthermia and iridium-192 treatment alone vs. interstitial iridium-192 treatment/hyperthermia and low dose cisplatinum infusion in the treatment of locally advanced head and neck malignancies.

    • D P Schreiber and T K Overett.
    • Porter Memorial Hospital Cancer Care Center, Denver, CO 80210, USA.
    • Int. J. Radiat. Oncol. Biol. Phys. 1995 Sep 30; 33 (2): 429-36.

    PurposeTo determine whether the addition of low dose platinum infusional chemotherapy adds to the effectiveness of interstitial hyperthermia/iridium-192 management of locally advanced head and neck malignancies.Methods And MaterialsFrom 1987 to 1993, 36 patients with locally advanced head and neck malignancies were treated locally with interstitial hyperthermia and iridium-192 as part or all of their management. Twenty-two of the above-mentioned patients also received low dose infusional cisplatinum chemotherapy at 20 mg/M2 per day during the time of the implant. No patient received greater than 100 mg/M2 total dose. Implant times ranged from 38.5 to 134 h and total doses delivered with the radiation implants ranged from 15 to 39.9 Gy. Average implant volume was 50 cc. Twenty-three patients received external beam irradiation supplementation in a dose range from 25.2 to 64 Gy.ResultsMedian follow-up for the entire group was 8, months with 7 months for the chemotherapy group vs. 12 months for the no-chemotherapy group. Freedom from relapse rates for the chemotherapy group vs. the no-chemotherapy group were 70% at 41 months vs. 63% at 60 months, p = not significant (p = NS). Overall survival by Life Table Analysis was 28% for the chemotherapy group at 41 months vs. 31% for the no-chemotherapy group at 60 months (p = NS). Complete response (CR) rates were 93% for the chemotherapy group vs. 86% for the no-chemotherapy group. Seven patients in the chemotherapy group had recurrent disease and four patients in the no-chemotherapy group were being treated for recurrent disease. Complication rates were similar in both groups, with two patients in the chemotherapy arm requiring hyperbaric oxygen treatments and one patient in the no-chemotherapy arm requiring hyperbaric oxygen treatments (for soft tissue necrosis).ConclusionIt appears that low dose platinum infusional chemotherapy can be added safely to patients receiving interstitial iridium-192 implants along with interstitial hyperthermia for head and neck malignancies. Although there appears to be a trend toward better freedom from relapse by adding chemotherapy, a larger trial and longer follow-up will be necessary to prove statistical significance. Further research in these areas is recommended in the form of a randomized prospective study.

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