Granular cell tumour (myoblastoma): two cases and a review of the literature.

Granular cell tumour is a rare neoplasm consisting of nests or ribbons of polyhedral cells with granular eosinophilic cytoplasm and small, dense nuclei. It may occur at various sites throughout the body. Two cases, one of the tongue and one of the rectum, are reported and the pathology and management of this uncommon neoplasm are discussed.