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Intraoperative photos of ectopic sphenoid sinus pituitary adenoma (black arrow). (A) Posterior septectomy (white arrowhead), opened left sphenoid sinus (white arrow). (B) Bulge on floor of sphenoid sinus with normal overlying mucosa. (C) Ectopic sphenoid sinus pituitary adenoma with surrounding bony defect seen after removal of left sphenoid sinus mucosa.
