Improvement of Swallowing Function After Surgical Treatment of Diffuse Idiopathic Skeletal Hyperostosis: Our Experience.

To investigate the swallowing improvement in patients who underwent a transcervical prevascular retrovisceral approach for symptomatic cervical diffuse idiopathic skeletal hyperostosis (DISH), by means of the 10-item Eating Assessment Tool (EAT-10) questionnaire. Retrospective observational study of 21 patients treated with a transcervical anterior prevascular retrovisceral approach for symptomatic DISH with dysphagia as the primary symptom. All patients underwent videofluoroscopic study of swallowing before surgery and the EAT-10 questionnaire before and after the surgical procedure. A statistically significant (P < 0.001) improvement in the postoperative EAT-10 score was reported. Sixteen out of 21 patients (76.2%) had their symptoms completely resolved, with an EAT-10 score less than 3. These results were not influenced by age and sex nor by presence of tracheostomy. The preoperative EAT-10 score was consistently related to postoperative outcome. Patients with mild and moderate dysphagia had better Δ in EAT-10 scores than patients with severe and very severe dysphagia (P = 0.02). Surgical management seems to be effective in resolving swallowing disorders related to this disease in a consistent percentage of patients. This evidence is supported by the statistically significant improvement in EAT-10 scores after treatment. Moreover, it might be postulated that early intervention can guarantee a higher success rate because patients with severe and very severe dysphagia had significantly smaller improvement.

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