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Figure 5: Patient 8. Infratentorial, supracerebellar approach in sitting position. (a) The dura is opened with a "Y" shaped incision and reflected superiorly along the transverse sinus. (b) The anastomotic veins between the superior surface of cerebellar hemispheres and the tentorium are coagulated. (c) The arachnoid covering the tumor in the posterior third ventricular region is seen due to gravity-assisted fall of the cerebellum and (d) the precentral cerebellar vein is coagulated and divided. The arachnoid is removed and tumor decompressed in a piecemeal manner. The opening of the third ventricle following tumor removal drains CSF

Figure 5: Patient 8. Infratentorial, supracerebellar approach in sitting position. (a) The dura is opened with a