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Background
Residual lymphadenopathy and detectable Epstein–Barr virus (EBV) DNA after radiotherapy (RT) are known negative prognostic factors for nasopharyngeal carcinoma (NPC). However, there is a need to distinguish between patients with residual disease that will metastasize and those who will not.
Purpose
To develop a prognostic model to improve the risk stratification of NPC patients after...