Granular Cell Tumors Arising Nearly Simultaneously in the Larynx and Subcutaneous Cervical Region

Abstract

Granular cell tumors are benign, relatively rare lesions that can occur in any organ in the body. Tumors are known to occasionally arise in two or more different organs. We report the case of a 60-year-old woman in whom granular cell tumors arose almost simultaneously in her subcutaneous cervical region and her larynx. The two tumors were surgically resected and examined histopathologically, and they exhibited the same histopathologic features. The tumor of the larynx was resected with the help of a carbon dioxide laser. Immunohistochemical staining revealed that both were positive for S-100 protein and neuron-specific enolase. Cases of the nearly simultaneous appearance of granular cell tumors in the neck and larynx are rather unusual. The results of immunohistochemical staining suggested that this tumor originates in nerve tissue.