American Journal of Neuroradiology 27:1639-1642, September 2006
© 2006 American Society of Neuroradiology
Case Report
HEAD & NECK
Pituicytoma: Diagnostic Features on Selective Carotid Angiography and MR Imaging
a School of Medicine, University of California, Irvine
b Departments of Pathology and Developmental and Cell Biology, University of California, Irvine
c Departments of Neurosurgery, University of California, Irvine Medical Center
d Department of Radiology, University of California, Irvine Medical Center
Please address correspondence to: Anton N. Hasso, MD, Department of Radiology, University of California, Irvine Medical Center, 101 The City Dr, Orange, CA 92868; e-mail: anhasso{at}uci.edu
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.