Recurrent CNS lymphoma with headache and lethargy. There are postoperative findings in the left cerebellar hemisphere. The limited sequences suggest the presence of mass lesions with relatively restricted diffusion within the anterior right temporal lobe, right posterior corpus callosum, and perhaps the right corona radiata, with extensive surrounding vasogenic edema. There appears to be mild right uncal herniation, but no significant midline shift.
The limited exam shows evidence of central nervous system lymphoma involving the anterior right temporal lobe, right posterior corpus callosum, and perhaps the right corona radiata, with extensive surrounding vasogenic edema.