PMC4558280_01
(a) Non-contrast CT scan showing ill-defined hyperdensity in left putamen. (b) Axial T1-W without contrast showing hyperintensities in bilateral putamen and caudate. (c) Axial T2-W without contrast showing corresponding hypointensities in putamen and caudate. (d) Axial T1-W with contrast showing no enhancement of abnormal signals after gadolinium.
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CT brain (Fig. 1a) revealed a 1x1.7 cm area of subtle increased density in left lentiform nucleus with surrounding decreased attenuation. Magnetic resonance imaging (MRI) brain with gadolinium contrast showed non-enhancing hyper intense lesions in bilateral lentiform and caudate nuclei on T1W images and old stable infarcts (Figs. 1b-d).