• AJNR Am J Neuroradiol · Jun 2004

    Case Reports

    Unilateral putaminal CT, MR, and diffusion abnormalities secondary to nonketotic hyperglycemia in the setting of acute neurologic symptoms mimicking stroke.

    • Max Wintermark, Nancy J Fischbein, Pratik Mukherjee, Esther L Yuh, and William P Dillon.
    • Department of Radiology, Neuroradiology Section, University of California, San Francisco, USA.
    • AJNR Am J Neuroradiol. 2004 Jun 1; 25 (6): 975-6.

    AbstractA 75-year-old Asian man presented with two episodes of chorea associated with nonketotic hyperglycemia. His chorea rapidly resolved after restitution of a normal serum glucose level, although an MR image obtained at the time of acute symptoms demonstrated high signal intensity on T1-weighted images, low signal intensity on T2-weighted images, and restricted diffusion, all involving the left putamen. A CT scan obtained 1 month later demonstrated faint hyperattenuation of the involved putamen. The reported pathophysiologic considerations for these imaging features are reviewed, and an original explanation is proposed.

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