Calcified Neurilemoma of the Larynx

Abstract

A calcified neurilemoma was discovered in a 73-year-old man whose main complaint was of progressive hoarseness associated with recent dysphagia. The tumor was located above the level of the right vocal cord, measured 4 x 3~3 cm and showed extens;ve cystic degeneration, in addition to calcification. At microscopic examination both Antoni A and B patterns were identified at the periphery of the degenerate tumor. At the ultrastructure level the tumor was composed of collagen fibrils with scattered elon ated cells. Cells had a definite basement membrane and cytoplasmic substructures as describef in neurilemoma. These benign encapsulated neoplasms are very rare in the larynx and the initial symptom usually is longstanding progressive hoarseness as in this report. Local excision is satisfactory treatment for laryngeal neurilemomas when practical.