Abstract
The aim of this study was to analyze the causal mechanisms of severe swallowing disorders after the treatment of oropharyngeal cancer. Twenty-six patients with severe swallowing disorders at ≥12 months after treatment for oropharyngeal cancer were analyzed retrospectively using videofluoroscopy. Fourteen patients (54%) had been treated with surgery (±postoperative radiotherapy), while 12 patients (46%) had been treated with (chemo)radiotherapy. Videofluoroscopy analysis showed a localized alteration in the surgical excision area resulting in impaired tongue root retraction in the surgical group (P=0.012), while general impairment of the pharyngeal, laryngeal, and upper oesophagus sphincter was found in the non-surgical group. Aspirations in the surgical group most often occurred after swallowing, while in the non-surgical group, they occurred during and after swallowing (P=0.039). This analysis by videofluoroscopy provides important insights into the mechanisms giving rise to swallowing disorders after the treatment of oropharyngeal cancer.
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