This slide represents a view of the ventral part of both cerebral hemispheres. The brain stem has been removed at the mid brain level. The occipital lobes shows the dura representing the tentorium of the cerebellum. There is bilateral herniation of the hippocampal gyri (arrows). The right hippocampus (seen on the left side of the photograph) shows the larger herniation. Diagnosis: Bilateral uncal herniation.