睡眠時無呼吸と構音障害を合併した巨大な軟口蓋多形腺腫の1例

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A large pleomorphic adenoma arising from the soft palate is rare. We describe a large pleomorphic adenoma of the soft palate in a patient who had sleep apnea and an articulatory disorder.A 56-year-old man visited our department because of speech difficulty. On physical examination, a large mass in the soft palate was noted. The mass measured 44 mm in diameter. MRI and CT images showed that it expanded into the right pharyngeal space. The pharyngeal port was obstructed, causing both sleep apnea and an articulatory disorder. The lesion was diagnosed to be a pleomorphic adenoma on biopsy. The mass was extirpated by abrasion from the palatal mucosa, because conventional tumor excision along with the total palate mucosa would probably have caused velopharyngeal incompetence. Postoperative polysomnography showed a decrease in the apnea hypopnea index from 59 /hr to 34 /hr and an increase in the lowest percutaneous arterial oxygen saturation from 84 % to 92 %. After mass extirpation, the articulatory disorder disappeared, with no further postoperative dysfunction.
Japanese Society of Oral and Maxillofacial Surgeonsの論文