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FIG 3. Case 3. Sagittal precontrast T1-weighted image (A) (400/12/2) shows a hypointense ovoid mass (arrow) within the body of the corpus callosum, depressing the roof of the lateral ventricle. After administration of contrast material (B) (400/12/2), it enhances homogeneously. A small infarct (white arrow) is noted within the right thalamus on the axial T2-weighted image (C) (2560/90/1). Subsequent biopsy confirmed an infarct
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