[A generally benign intrasellar and/or suprasellar mass arising from the neurohypophysis or infundibulum. It is composed of nests of large cells with granular, eosinophilic cytoplasm due to abundant intracytoplasmic lysosomes. It generally has a slow progression and lacks invasive growth. (Adapted from WHO.) ( NCI )]
UMLS (NCI) C1333873Granular Cell Tumor of the Neurohypophysis
Granular Cell Tumor of the Posterior Pituitary Gland