Granular cell tumors of the tongue.

We have presented a series of 19 new cases of granular cell tumors of the tongue. This benign condition is often difficult to diagnose if an adequate biopsy specimen has not been obtained. Insufficient biopsy material that includes only the overlying pseudoepitheliomatous hyperplasia may distort the pathologic picture. Review of frozen sections should provide an accurate diagnosis, and local surgical excision should resolve the problem completely.