LGI1 and Encephalopathy: In contrast, diffusion abnormalities, confirmed on ADC mapping, were virtually absent in the images from the non-prion cases being seen in only one case, a patient with cerebral lymphoma (figure 3) Two other patients, one with LGI1 antibody encephalopathy who had abnormal signal in the swollen left basal ganglion on DWI (figure 4) and the other had a pulvinar sign (figure 5) but ADC did not confirm restriction in either.