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Figure 21: The superior petrosal sinus is ligated and cut. The tentorium is opened exposing the Trigeminal nerve superior to petroclival tumor. The porus Trigeminus is opened to expose trigeminal ganglion in Meckel's cave

Figure 21: The superior petrosal sinus is ligated and cut. The tentorium is opened exposing the Trigeminal nerve superior to petroclival tumor. The porus Trigeminus is opened to expose trigeminal ganglion in Meckel's cave