Case Report

Surgical Approach to the Cavernous Sinus for a Trigeminal Schwannoma Resection: Technical Note and Case Report

Figure 4

Anatomical diagram of the cavernous sinus: 1: hypophysis, 2: internal carotid artery, 3: 6th CN, 4: meningeal (outer) layer, 5: cavernous sinus, 6: sphenoid sinus, 7: endosteal (inner) layer, 8: V1, 9: V2, 10: 4th CN, 11: 3rd CN, and 12: the outer layer at the diaphragma sellae. The endosteal layer is marked in green, while the meningeal layer is marked in yellow.