Ishi Y, Harada T, Kameda H, Okada H, Yokota I, Okamoto M, Sawaya R, Motegi H, Yamaguchi S, Terasaka S, Kudo K, Fujimura M. Variations and natural history of primary intraparenchymal lesions associated with neurofibromatosis type 2 Neuroradiology. [Epub ahead of print]