= INFUNDIBULOMA = GRANULAR CELL TUMOR
= benign slow-growing low-grade glioma = maldeveloped tissue in an abnormal site [choristos, Greek = separated, apart]
Incidence: rare tumor (70 cases reported in literature)
Origin: pituicyte (= modified astrocyte)
Age: 4th5th decade; M÷F = 1÷2
Location: along neurohypophysis (sella, suprasellar cistern)
MR:
Prognosis: no invasion, no recurrence