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Gadolinium-enhanced T1 MRI (A) coronal and (B) axial views of a patient with incidental finding of left nasal mass on preoperative rhinology evaluation before endoscopic transsphenoidal approach (eTSA). (C) Coronal CT scan in bone window algorithm is also shown. Biopsy of this mass revealed esthesioneuroblastoma. This finding significantly altered the operative plan before proceeding with eTSA.
