A Case of Spindle Cell Lipoma of the Arytenoid

概要

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Lipomas usually occur in the posterior neck and the limbs. Lipomas of the oropharynx, hypopharynx, larynx are very rare, typically accounting for less than 1% of all hypopharyngeal and laryngeal benign neoplasms. Histologically, spindle cell lipoma is characterized by mature adipose cells mixed with collagen-forming spindle cells. We present a case of a 79-year-old male with a 6-month history of dysphagia who had a spindle cell lipoma arising from the arytenoid. Flexible videolaryngoscopy showed a single white mass, covered with normal mucosa. A computed tomography (CT) scan and magnetic resonance imaging (MRI) of the neck showed a round mass measuring 1.5 cm at its maximum diameter. Videofluorography of swallowing showed contrast medium reflux toward the larynx. The mass was removed using a KTP laser through a direct-suspension laryngoscope. Postoperative videoendoscopic and videofluoroscopic deglutition studies showed the normal swallowing. It is important to follow up the patient for the long term to check for recurrence and malignant transformation.