PT - JOURNAL ARTICLE AU - L V Petrus AU - J F Lois AU - W W Lo TI - Iatrogenically induced cortical blindness associated with leptomeningeal enhancement. DP - 1998 Sep 01 TA - American Journal of Neuroradiology PG - 1522--1524 VI - 19 IP - 8 4099 - http://www.ajnr.org/content/19/8/1522.short 4100 - http://www.ajnr.org/content/19/8/1522.full SO - Am. J. Neuroradiol.1998 Sep 01; 19 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.