Caudal Perspective of Cerebrum and Brainstem. A, Basal surface; the anterior, middle, and posterior limits of the temporal medial lobe are shown. On the right, the temporal pole and temporal operculus have been removed through an axial cut in the calcarine fissure topography. The relationship between amygdala, hippocampus head, dentate gyrus, and the PCA and its branches are demonstrated. B, Medial and basal surface view of the left hemisphere. C, Basal surface; magnified view of right hemisphere. The parahippocampal gyrus has been removed to the posterior half of the uncus. The extraventricular face of the hippocampus head and dentate gyrus has been preserved, exposing the ambient cistern with its vascular contents. These structures have been exposed in the surgical procedure. (Images courtesy of E de Oliveira)