Abstract

Reversible splenial lesion syndrome (RESLES) is a rare clinical imaging syndrome that is characterized by magnetic resonance imaging (MRI) findings of reversible abnormal signals in the splenium of the corpus callosum (SCC). There are a variety of pathogenic causes, including infection, metabolic disturbances, and antiepileptic drug use. Moreover, the disease is clinically rare and easily misdiagnosed. Here, we report a unique case of a 32-year-old man with Fanconi syndrome who had an intensified signal in the SCC and diffuse white matter swelling on MRI. We believe this to be the first adult case of RESLES as a manifestation of Fanconi syndrome, which further expands the disease spectrum leading to RESLES. The imaging features of this case included extensive lesions, symmetrical diffuse restricted signals, and reversibility. The identification of these features improves our understanding of the imaging characteristics of RESLES, thus enabling clinicians to better understand this disease, correctly establish its diagnosis, and improve its prognosis in this kind of patient.

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