Abstract
Summary: Tacrolimus is an immunosuppressive agent that can show a wide variety of neurologic side effects, including leukoencephalopathy. Although the prognosis is good—after cessation or dose reduction, complete recovery usually occurs—the differentiation with treatable diseases such as progressive multifocal encephalopathy can be difficult, making a stereotactic biopsy of the white matter lesion sometimes necessary. We describe the case of a 12-year-old girl with a severe, reversible tacrolimus-related leukoencephalopathy and only mild histopathologic abnormalities.
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