A lesion in the left parietal lobe is hyperintense on both T1 and T2WI, with perilesional edema. The lesion shows diffusion restriction and signal loss on SWI. The right sigmoid sinus, transverse sinus, and posterior aspect of the superior sagittal sinus, as well as the cortical vein over the left parietal lobe, are expanded and are T1 hyperintense. On MRV, the right sigmoid sinus, transverse sinus, and superior sagittal sinus are not visualized.