OBJECTIVES: To investigate the prevalence of long-term dysphagia in patients treated for nasopharyngeal carcinoma (NPC) by radiotherapy. Study Design Questionnaire-based assessment, clinical examination, and videofluoroscopic assessment of 50 patients, ages 26 to 75 years (average, 49 years), treated for NPC 12 to 119 months (average, 56 months) previously with no evidence of disease recurrence. METHODS: Administered questionnaire assessment of patients eating and swallowing. Clinical examination by a single experienced clinician. Videofluoroscopy was used to record swallowing of solid, paste, and liquid bolus. Pharyngeal transit time (PTT) was recorded, and the video recordings were assessed by two experienced observers for abnormalities. RESULTS: Fifty patients completed the questionnaire and were examined. Seventy-six percent reported dysphagia, 97% had xerostomia, and 78% had no gag reflex. Forty-nine patients underwent videofluoroscopy. Abnormal pharyngeal contraction was observed on videofluoroscopy in 93% of the subjects. Silent aspiration was observed in 22% of the patients. PTT was prolonged from a normal of 1 second to 1.9 seconds for solid, 1.7 seconds for paste, and 1.3 seconds for liquid consistencies. CONCLUSIONS: Subjective and objective swallowing abnormalities are common after radiotherapy for NPC. The implications of this finding and possible causes are discussed. Copyright 2000 John Wiley & Sons, Inc.
OBJECTIVES: To investigate the prevalence of long-term dysphagia in patients treated for nasopharyngeal carcinoma (NPC) by radiotherapy. Study Design Questionnaire-based assessment, clinical examination, and videofluoroscopic assessment of 50 patients, ages 26 to 75 years (average, 49 years), treated for NPC 12 to 119 months (average, 56 months) previously with no evidence of disease recurrence. METHODS: Administered questionnaire assessment of patients eating and swallowing. Clinical examination by a single experienced clinician. Videofluoroscopy was used to record swallowing of solid, paste, and liquid bolus. Pharyngeal transit time (PTT) was recorded, and the video recordings were assessed by two experienced observers for abnormalities. RESULTS: Fifty patients completed the questionnaire and were examined. Seventy-six percent reported dysphagia, 97% had xerostomia, and 78% had no gag reflex. Forty-nine patients underwent videofluoroscopy. Abnormal pharyngeal contraction was observed on videofluoroscopy in 93% of the subjects. Silent aspiration was observed in 22% of the patients. PTT was prolonged from a normal of 1 second to 1.9 seconds for solid, 1.7 seconds for paste, and 1.3 seconds for liquid consistencies. CONCLUSIONS: Subjective and objective swallowing abnormalities are common after radiotherapy for NPC. The implications of this finding and possible causes are discussed. Copyright 2000 John Wiley & Sons, Inc.
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