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1A: Identification of the right superior turbinate through identification of the natural ostium; 1B: Dissection of the insertion of the right superior turbinate onto the base of the skull; 1C: Removal of the superior turbinate by its lateral surface; 1D: Final aspect of the base of the skull after removal of the superior turbinate. ST, superior turbinate; OS, sphenoid sinus natural ostium; SB, skull base.
