Posterior Pituitary Gland Neoplasm

**Semantic type:** Neoplastic Process

**Definition:** A low-grade neoplasm that arises from the neurohypophysis. It includes pituicytoma, granular cell tumor of the sellar region, spindle cell oncocytoma, and ependymal pituicytoma.

**Synonyms:** - Neurohypophysis Neoplasm - Neurohypophysis Tumor - Pituicyte Tumor - Pituicyte Tumor Family - Posterior Pituitary Gland Tumor - Posterior Pituitary Neoplasm - Posterior Pituitary Tumor