RT Journal Article SR Electronic T1 Pituicytoma: Diagnostic Features on Selective Carotid Angiography and MR Imaging JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1639 OP 1642 VO 27 IS 8 A1 W.N. Gibbs A1 E.S. Monuki A1 M.E. Linskey A1 A.N. Hasso YR 2006 UL http://www.ajnr.org/content/27/8/1639.abstract AB Summary We report a case of pituicytoma, a rare primary tumor of the neurohypophysis. A 64-year-old man presented with progressive visual complaints, bitemporal hemianopsia, and headache. Imaging studies revealed distinctive features of a mass lesion that thickened the pituitary stalk with a bilobed protrusion extending into the hypothalamus. Angiography demonstrated tumor vascular supply from the superior hypophyseal arteries representing the diencephalic branches of the internal carotid arteries. We discuss the imaging and pathology of this unusual tumor.