RT Journal Article SR Electronic T1 Diagnostic uncertainty of tumefactive cystic demyelinating lesions JF Neurosciences Journal JO Neurosciences (Riyadh) FD Prince Sultan Military Medical City SP 176 OP 177 VO 18 IS 2 A1 Dhaifallah M. Almalki A1 Osama Y. Mudhafar A1 Abdulaziz S. Alsaman A1 Adel A. Mahmoud YR 2013 UL http://nsj.org.sa/content/18/2/176.abstract AB