목적: Understanding the relationship between septal resection extent and olfactory outcomes is crucial for developing surgical techniques that preserve smell function. 방법:This retrospective study analyzed 295 patients who underwent pituitary adenoma surgery. The extent of nasal septum resection was quantified using three-dimensionally reconstructed computed tomography images. Olfactory function was evaluated by comparing preoperative and 6-month postoperative scores. 결과:A significant correlation was found between the extent of septal resection and reduced CCSIT scores, indicating a decline in olfactory function. Patients with more extensive septal resections experienced greater discomfort and olfactory loss, as demonstrated by higher SNOT-22 and VAS scores. These findings underscore the nasal septum's crucial role in maintaining laminar airflow and preserving olfactory function. 결론:Minimizing posterior septal resection may help preserve olfactory function, suggesting the need for surgical strategies that maintain septal integrity to reduce the risk of postoperative olfactory impairment.