The changing role of external-beam irradiation in the management of malignant tumors of the major salivary glands.

Abstract
Postoperative irradiation reduces the local recurrence rate for malignant human salivary gland tumors. Less extensive surgery followed by immediate radiotherapy is possible without decreasing local control. Cosmetic appearance and physiological function are preserved. Local tumor control was achieved in 16 of 17 patients without gross tumor using a dose of 6000 rad/6 wk. Combined photon and electron beams give better cosmetic and functional results than either modality alone. Irradiation with .gtoreq. 7000 rad should be employed in unresectable cases and may effect tumor control.

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