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The benefit of head rotation to the affected side is indicated during swallowing in patients complaining of dysphagia with unilateral pharyngeal palsy and/or laryngeal palsy. We experienced three cases of severe dysphagia after operations for giant paragangliomas (two vagal paraganglioma and one carotid body tumor) in the parapharyngeal space. During operation, the transmandibular transpterygoid approaches were applied to ensure better surgical views, and tracheostomy was performed to keep the airway open after operation. In each case, dysphagia during the pharyngeal stage of swallowing was significantly improved with rehabilitation using of this head rotation. We believe that rather than forbid oral intake, using an active bolus with head rotation is important for cases where dysphagia in the pharyngeal stage of swallowing is present with unilateral pharyngeal and/or laryngeal palsy. Repetitive swallowing exercises are important to reacquire the complicated movement of swallowing. Additionally, an active bolus flowing into the pyriform sinus on the healthy side will prevent a relaxation disorder of the cricopharyngeal muscle on that side. Furthermore, compensatory movement of the arytenoid on the healthy side improves dysphagia. We emphasize the usefulness of head rotation during swallowing rehabilitation for dysphagia with unilateral pharyngeal and/or laryngeal palsy in spite of its simplicity.

The Benefit of Head Rotation on Pharyngoesophageal Dysphagia. From Three Cases of Paraganglioma in the Parapharyngeal Space.