RT Journal Article SR Electronic T1 Iatrogenically induced cortical blindness associated with leptomeningeal enhancement. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1522 OP 1524 VO 19 IS 8 A1 L V Petrus A1 J F Lois A1 W W Lo YR 1998 UL http://www.ajnr.org/content/19/8/1522.abstract AB Leptomeningeal enhancement is usually infective or neoplastic in origin. We present a case in which a patient received total parenteral nutrition via a catheter unknowingly placed within the right vertebral artery. We postulate that the hyperosmolar nature of the infused solution induced temporary osmotic disruption of the blood-brain barrier, resulting in cortical blindness associated with localized leptomeningeal enhancement.