Long-term olfaction outcomes in transnasal endoscopic skull-base surgery: a prospective cohort study comparing electrocautery and cold knife upper septal limb incision techniques.

There was no significant change in patient UPSIT scores 1 year after transnasal skull-base approaches, and no short-term or long-term differences between cold knife and cautery upper septal limb incision techniques. Our study supports an individualized approach based on surgeon preference.