Amyloidosis of the larynx: a case report.

A 75-year-old female patient presented with hoarseness and foreign body sensation in the back of her throat of one-month history. Direct laryngoscopy showed bilateral, yellow, hyperemic masses on the left false vocal fold and laryngeal ventricle. Both true vocal folds were mobile. Excisional biopsies of the right false vocal fold and ventricle showed extracellular, insoluble, fibrillar protein accumulation, consistent with amyloidosis. There was no evidence for neoplasm. Serum and urine electrophoreses were negative. The work-up for systemic amyloidosis and multiple myeloma were negative. Treatment was limited to surgical excision. No complications developed within a six-month follow-up period.