Recurrent Head and Neck Cancer: Retreatment of Previously Irradiated Areas with Combined Chemotherapy and Radiation Therapy—Results of a Prospective Study

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Abstract
To prospectively test the effectiveness of combined chemotherapy and radiation therapy for recurrent head and neck cancer. In 32 patients, external-beam radiation therapy (2 Gy/d) was administered as a 5-day course with simultaneous hydroxyurea (1.5 g/d orally) and 5-fluorouracil (300 mg/m(2)/d bolus), followed by 9 days of rest. This cycle was repeated until a cumulative soft-tissue radiation dose of 110 Gy (including prior radiation therapy) was reached. At a median follow-up of 18 months, three patients were alive, and 29 had died. The overall 1-year survival rate was 39%. The overall response rate was 41% (13 patients). Acute toxicity was low. According to World Health Organization and Radiation Therapy Oncology Group criteria, there were three cases of grade 3 mucositis or dermatitis and three cases of grade 3 or 4 neutropenia. Three patients had grade 3 late effects: one oral trismus, one jugular venous thrombosis, and one cerebral stroke. The combination of simultaneous 5-fluorouracil and hydroxyurea infusion and local reirradiation is feasible for retreatment of recurrent head and neck tumors. This regimen provides short-term tumor control in most patients and long-term control in a few patients.

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