Dysphagia after chemo-radiation for nasopharyngeal cancer: A scoping review.

26 , 27 In cohorts >1 year post-RT, an increasing trend of oral phase impairments were observed as time lapsed after RT across studies. 8 , 27 The most common problem reported in the oral phase was increased mucosal coating, ranging from 32.9% to 96.5%. 8 , 27 To explain the observed deficits in the oral phase of the swallow, specific functions related to the tongue have been investigated ( Table 5 ).

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