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Evaluation of a neutron boost in head and neck cancer results of the randomized radiation therapy and oncology group trial 78 08


American Journal of Clinical Oncology 9(1): 61-66
Evaluation of a neutron boost in head and neck cancer results of the randomized radiation therapy and oncology group trial 78 08
Patients with untreated squamous cell cancer of the head and neck region were randomized to receive either a boost of 25-30 Gy using photon-beam irradiation (photons) or an equivalent boost using neutron-beam irradiation (neutrons). All patients received an initial 45-50 Gy of wide-field photon irradiation. A total of 57 patients was evaluable on the neutron arm and 58 were evaluable on the photon arm. The proportion of patients with complete responses was 60 and 64% on the neutron and photon arms, respectively. The locally disease-free proportion at 2 years was estimated to be 20 and 31%, and the 2-year survival was estimated to be 32 and 41%, respectively. These differences are not statistically significant. There was a higher rate of severe complications on the neutron arm, 16 versus 7%. Thus, there was no evidence that a neutron boost produces better initial tumor clearance, local tumor control, or survival than photon boost, and it may produce more complications.

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Accession: 005395314



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