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BACKGROUNDThis study sought to compare the clinical outcomes of upper versus whole‐neck prophylactic irradiation in the treatment of patients with node‐negative nasopharyngeal carcinoma (NPC).
METHODSBetween November 2005 and June 2012, 301 patients with node‐negative NPC were randomly assigned to receive primary plus prophylactic upper neck irradiation (UNI, 153 patients) or primary plus whole‐neck...
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