Images of a 52-year-old man who developed acute left hemiparesis, ataxia, and agitation (case 1). Images of a 52-year-old man who developed acute left.

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Axial T1-weighted image after contrast administration (A) and a FLAIR image (B) demonstrating a left parietal subcortical DVA with deep venous drainage.

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Presentation transcript:

Images of a 52-year-old man who developed acute left hemiparesis, ataxia, and agitation (case 1). Images of a 52-year-old man who developed acute left hemiparesis, ataxia, and agitation (case 1). A, Sagittal view T1-weighted MR image (560/12/2 [TR/TE/excitations]) shows a lesion in a concentric ring pattern in the right centrum semiovale.B, Coronal view T1-weighted MR image with contrast enhancement shows focal, peripheral enhancement in the lesion.C, Histopathologic image shows the area that its myelin-spared (⇓) and strictly separated from the demyelinated area, which contains a high number of macrophages (hematoxylin and eosin, original magnification ×125). On the right (Sudan black, original magnification ×500), the demyelinated area and macrophages, including black myelin debris, can be seen (⇑).D, Coronal view fluid-attenuated inversion recovery image (15000/170/1; inversion time, 2500 ms) shows a residual concentric lesion 13 months after surgery. Ercan Karaarslan et al. AJNR Am J Neuroradiol 2001;22:1362-1367 ©2001 by American Society of Neuroradiology