Endoscopic Transoral Coblation Resection of an Aryepiglottic Fold Schwannoma Presenting With a 10-Year Cough: A Case Report.

Laryngeal schwannomas are extremely rare, accounting for approximately 0.1% of benign laryngeal neoplasms. Those arising from the aryepiglottic fold are even rarer, and classic symptoms include dysphagia or globus sensation. Isolated chronic cough as the sole presentation is rare in schwannoma. We report a 72-year-old female with persistent cough for 10 years, found to have a large round mass on the posterior edge of the right aryepiglottic fold. Intraoperative frozen section and postoperative immunohistochemistry confirmed the diagnosis of schwannoma. She underwent successful endoscopic transoral resection using a low-temperature plasma knife (coblation). Complete tumor removal was achieved with minimal blood loss, and her cough improved markedly. No recurrence was noted at 6 months. This case provides a valuable clinical reference for the minimally invasive management of similar lesions.