Radiology Case Reports (Oct 2022)

Reversible splenial lesion syndrome (RESLES): Two patients as study cases

  • Siham Nasri, MD,
  • Hajar Abdelaouahhab, MD,
  • Widad Abbou, MD,
  • Imane Guerrouj, MD,
  • Narjisse Aichouni, MD,
  • Imane Kamaoui, MD,
  • Imane Skiker, MD

Journal volume & issue
Vol. 17, no. 10
pp. 3635 – 3638

Abstract

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Reversible splenial injury syndrome (RESLES) is a rare clinicoradiological entity that defines a reversible lesion in the splenium of the callosum in magnetic resonance imaging.RESLES may be of infectious iatrogenic or metabolic origin. We report 2 cases of drug induced RESLES in our training.The presence of an isolated lesion of the corpus callosum in a context of polymedication by psychotropic drugs and the regression in less than 4 weeks suggests a toxic origin, in particular medicinal.The pathophysiology of these reversibles lesions of the splenium of callosum is not very clear, most often it is a phenomenon of vasogenic edema that is evoked, the clinical symptoms are very varied and nonspecific, and the prognosis is generally good in the absence of underlying disorder.

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