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Endoscopic trans-pterygoid palatine fossa approach. (A, B) Preoperative magnetic resonance image (MRI) shows a pituitary adenoma invading into the lateral cavernous sinus. (C, D) Postoperative MRI after gross total resection of the tumor. The pterygopalatine fossa have been opened to access the lateral margin of the tumor. Nasoseptal flap was used for skull base reconstruction.
