RT Journal Article SR Electronic T1 MR of leptomeningeal spinal and posterior fossa amyloid. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 900 OP 902 VO 19 IS 5 A1 S Horowitz A1 C Thomas A1 G Gruener A1 S Nand A1 J F Shea YR 1998 UL http://www.ajnr.org/content/19/5/900.abstract AB We report an unusual cause of leptomeningeal MR enhancement, amyloid, along the surfaces of the spinal cord and brain stem and in the spinal subarachnoid space, with sacral intradural and epidural deposition. Type I familial amyloid polyneuropathy may cause amyloid deposition along the leptomeninges of the spinal cord and brain in addition to the visceral organs and the peripheral somatic and autonomic nerves.