title: Atypical Unilateral Posterior Reversible Encephalopathy Syndrome Mimicking a Middle Cerebral Artery Infarction.
abstract: Posterior reversible encephalopathy syndrome (PRES) is usually a reversible clinical and radiological entity associated with typical features on brain MR or CT imaging. However, the not-so-uncommon atypical radiological presentations of the condition are also present and they may go unrecognised as they are confused with other conditions. Here, we report a very rare case of atypical, unilateral PRES in a 49-year-old uremic, post-transplant female patient who presented with seizures. Initial MRI showed high-grade occlusion of the left middle cerebral artery (MCA) and lesions suggestive of subacute infarction in the ipsilateral frontotemporoparietal lobe. Patient symptoms had resolved a day after the onset without any specific treatment but early follow-up CT findings suggested hemorrhagic transformation. Follow-up MRI performed 2 years later showed complete disappearence of the lesions and persisting MCA occlusion.
authors.affiliation: Department of Radiology, Ondokuz Mayıs University, Faculty of Medicine, Kurupelit 55220, Samsun, Turkey.
authors.forename: İlkay
authors.initials: İ
authors.lastname: Çamlıdağ
authors.affiliation: Department of Neurology, Yonsei University Severance Hospital, Seoul 03722, Korea.
authors.forename: Yang-Je
authors.initials: YJ
authors.lastname: Cho
authors.affiliation: Department of Radiology, Yonsei University Severance Hospital, Seoul 03722, Korea.
authors.forename: Mina
authors.initials: M
authors.lastname: Park
authors.affiliation: Department of Radiology, Yonsei University Severance Hospital, Seoul 03722, Korea.
authors.forename: Seung Koo
authors.initials: SK
authors.lastname: Lee
mesh_terms: D058186:Acute Kidney Injury / Q000150:complications; D001921:Brain / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D020244:Infarction, Middle Cerebral Artery / Q000175:diagnosis / Q000000981:diagnostic imaging; D016040:Lung Transplantation; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D054038:Posterior Leukoencephalopathy Syndrome / Q000150:complications / Q000175:diagnosis*; D014057:Tomography, X-Ray Computed
keywords: Atypical; Infarction; Posterior reversible encephalopathy syndrome; Unilateral