Fig. 1
From: Isolated intradural Rosai-Dorfman disease of the spine: report of two cases
Case 1. A preoperative MRI showing 2 distinct ventral, intradural and extramedullary lesions with homogeneously isointenseon both sagittal T1- and T2-weighted images (a and b), with marked homogeneous enhancement on the sagittal (c) and axial (d) after gadolinium administration. A dural tail was observed at the ventral dura. Case 2.A preoperative MRI showing a S1/2 level extramedullary lesion with similar isointenseon both sagittal T1- and T2-weighted images (e and f), and slight heterogeneous enhancement on the sagittal (g) and axial (h) after gadolinium administration