There is a left temporo-parieto-occipital lesion that transgresses the splenium of the corpus callosum. Associated vasogenic edema +/- cytotoxic edema involving the posterior parietal cortex. The most probable diagnosis is glioblastoma multiforme. There could be an associated stroke-like phenomenon, but it is most probably secondary to the tumor. MRI is suggested to confirm the diagnosis is this examination was realized without IV contrast.