Fig. 1
From: Asymptomatic progressive multifocal leukoencephalopathy: a case report and review of the literature
(a-h) Magnetic resonance imaging T2 fluid-attenuated inversion recovery and post-contrast T1 images of the patient at time of progressive multifocal leukoencephalopathy diagnosis showing bilateral asymmetric confluent non-enhancing hyperintensities in the subcortical precentral gyri (a, b), at 3 months showing a few small enhancing lesions in the left frontal lobe suggestive of immune reconstitution inflammatory syndrome (c, d), at 5 months showing interval development of T2 signal abnormality with mild enhancement (e, f), and at 1 year showing further decrease in T2 hyperintensities and resolution of enhancement (g, h)