Left Supracerebellar Transtentorial Approach. A, The paramedian supracerebellar approach has been performed. B, The tentorium has been sectioned from below and the free cut edge of the tentorium retracted, together with the cerebellar hemisphere. C and D, The posterior temporomedial structures, including the parahippocampal gyrus and the posterior temporal artery, are revealed. (Images courtesy of AL Rhoton, Jr.)