Asymptomatic posterior reversible encephalopathy revealed by brain MRI in a case of axonal Guillain-Barré syndrome.

Parmentier, C. [UCL] Vandermeeren, Yves [UCL] Laloux, Patrice [UCL] Mormont, Eric [UCL]

Posterior reversible encephalopathy syndrome (PRES) is a clinicoradiologic syndrome characterized by headaches, encephalopathy, visual disturbances and seizures, with a transient vasogenic oedema on brain imaging. The lesions are predominantly but not exclusively located in the posterior circulation system. The most frequent aetiologies include hypertension, cytotoxic or immunosuppressive drugs, sepsis, eclampsia or preeclampsia [1]. Some cases of PRES are described in association with Guillain-Barré syndrome (GBS) [2]. We report the case of a young woman who presented with a GBS, dysautonomia, and a brain MRI suggesting PRES but lacking any encephalic symptom suggestive of that syndrome. We discuss the relationship between, PRES, GBS and dysautonomia.