There is increase area of T2 and FLAIR hyperintensity in left temporal lobe extending into the insular cortex, posterior thalamus and in the posterior aspect of posterior occipital ventricle with mass effect, swollen gyri and effacement of its sulci. The involved areas show restricted diffusion but less intense compared to infarction. On contrast administration there is heterogenous enhancement of the affect area with leptomeningeal enhancement. No signal loss is seen in SWAN sequence.