RT Journal Article SR Electronic T1 Diffuse Leptomeningeal Hyperintensity on Fluid-Attenuated Inversion Recovery MR Images in Neurocutaneous Melanosis JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 138 OP 141 VO 25 IS 1 A1 Hayashi, Masato A1 Maeda, Masayuki A1 Maji, Tomoaki A1 Matsubara, Toshio A1 Tsukahara, Hirokazu A1 Takeda, Kan YR 2004 UL http://www.ajnr.org/content/25/1/138.abstract AB Summary: Neurocutaneous melanosis (NCM) is a rare neuroectodermal dysplasia characterized by large or multiple cutaneous congenital pigmented nevi and benign or malignant melanocytic tumors of the leptomeninges. Although the MR manifestations of this disease have been reported in a small series of cases, the usefulness of fluid-attenuated inversion recovery (FLAIR) MR findings has not been documented. We present a case of NCM that showed diffuse leptomeningeal hyperintensity on FLAIR images. This FLAIR finding may be a clue to the detection of leptomeningeal abnormalities in NCM.