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DOI: 10.1055/a-1946-0240
Sinonasal Outcomes of the Combined Transseptal/Transnasal Approach with Unilateral Nasoseptal Rescue Flap in Endoscopic Endonasal Transsphenoidal Surgery: A Propensity Score Matching Analysis
Funding This work was supported by the National Research Foundation of Korea (NRF) (2022R1F1A1066232, 2019M3A9H2032424, 2019M3E5D5064110), and by the Ministry of Trade, Industry & Energy (MOTIE, Korea) (20012378). The sponsors had no role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript.

Abstract
Objectives The authors applied surgical techniques acquired during the use of endoscopic combined transseptal/transnasal approach to reduce approach-related morbidity and improve sinonasal outcomes.
Study Design This is a retrospective cohort study of a prospectively collected database.
Setting The study setting involves a tertiary referral center.
Participants A total of 86 patients who underwent endoscopic endonasal transsphenoidal surgery for newly diagnosed pituitary adenomas from April 2018 to March 2021 were included. Patients treated via the combined transseptal/transnasal approach served as the study group (n = 18); those treated via the bilateral transnasal approach comprised the control group (n = 68). From the control group, propensity score matching (PSM) analysis was further performed to account for potential confounders and selection bias.
Main Outcome Measures Paired analysis was performed for pre- and 6-month-postoperative time points in study group, control group, and PSM control group. Olfactory function was evaluated by Connecticut Chemosensory Clinical Research Center (CCCRC) test, Cross-Cultural Smell Identification Test (CCSIT), and sinonasal outcomes were assessed by Sino-Nasal Outcome Test-22 (SNOT-22).
Results In the study group, CCCRC (p = 0.517) and CCSIT (p = 0.497) did not show any significant difference before and after surgery. There was some improvement in the symptom score of SNOT-22, but it was not statistically significant (p = 0.115). In the control group adjusted with PSM, a significant decrease in olfaction (p = 0.047) was observed using CCCRC. The CCSIT score was also decreased but not significant (p = 0.163). Also, there was no difference in the improvement of SNOT-22 (p = 0.781).
Conclusion Our new surgical method preserves olfactory function without compromising surgical outcomes.
Publication History
Received: 08 July 2022
Accepted: 13 September 2022
Accepted Manuscript online:
16 September 2022
Article published online:
01 November 2022
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