Granular cell tumor of the urinary bladder

Abstract

A case of granular cell tumor of the urinary bladder is reported. A 48-year-old Japanese man with a bladder tumor underwent transurethral resection of the tumor and microscopic examination showed a granular cell tumor. Immunohistochemical staining for neuron specific enolase and S100 protein was positive, and it was suggested that the granular cell tumor was derived from Schwann cells.