Clinical Features, Etiology, and 6-Month Prognosis of Isolated Corpus Callosum Infarction

Figure 3

Male, 53 years, callosal infarction caused by anterior cerebral artery dissecting aneurysm. Diffusion-weighted imaging (DWI) shows acute infarction in the right corpus callosum splenium (a-b). Three-dimensional digital subtraction angiography (DSA) confirms long segmental dilatation of the right anterior cerebral artery (ACA) (long white arrow) with distal concentric stenosis (c). Axial contrast-enhanced high-resolution magnetic resonance imaging (MRI) clearly reveals the enhanced wall of the ACA and an intima flap in the arterial lumen forming the "double-lumen sign" (white arrow) (d).

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