( b ) overlapping of more of the lateral aspect of the pons than usual , causing partial filling in of the cerebellopontine angle ( cpa ) cisterns , presenting as bilateral cpa masses , and ( c ) wedging of the cerebellar margin between the lateral aspect of the brain stem and the adjacent free tentorial margin , so that the cerebellar hemispheres acquire an anteriorly pointed configuration .
C0007765
cerebellar
C0228465
cerebellar hemispheres