Fig. 1From: Anaplastic astrocytoma mimicking progressive multifocal leucoencephalopathy: a case report and review of the overlapping syndromes a FLAIR, Fluid-Attenuated Inversion Recovery, sagittal (2006): Periventricular high–signal intensity lesions exhibiting distribution of ovoid demyelinated periventricular lesions radially oriented to ventricles, which is typical for multiple sclerosis. b FLAIR, Fluid-Attenuated Inversion Recovery, transverse (2006): Atypical tumefactive periventricular demyelinated lesion connected to the frontal pole of the lateral ventricle. c T2w, T2-weighted MRI, transeverse (2006): Atypical hyperintensive tumefactive periventricular demyelinated lesion connected to the frontal pole of the lateral ventricleBack to article page