Related Experiment Video
Updated: Jan 31, 2026

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery
Published on: July 5, 2021
Quality of life after extended versus transsellar endoscopic skull base surgery from 767 patients
Min Young Seo1, Do-Hyun Nam2, Doo-Sik Kong2
1Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, South Korea.
Objectives/Hypothesis:
The aim of this study was to compare sinonasal-related quality of life (QOL) in patients treated by extended or transsellar endoscopic skull base surgery.
Study Design:
Prospective data analysis.
Methods:
Prospectively collected data from patients who underwent endoscopic skull base surgery between 2012 and 2017 were analyzed. Primary outcomes were preoperative Sino-Nasal Outcome Test-20 (SNOT-20) scores and then 1-month, 3-month, and 6-month follow-up. Comparative analysis was performed between the endoscopic transsellar approach (ETA) group (n = 647) and an extended endoscopic endonasal approach (EEEA) group (n = 120). In ETA group, the SNOT-20 score was compared between patients with a nasoseptal flap (NSF) (ETA-NSF) and without an NSF (ETA-no NSF).
Results:
The mean total SNOT-20 score was significantly worse in the EEEA than ETA group at 1, 3, and 6 months postoperatively (P < .05). Although there was no significant difference in total SNOT-20 score between the ETA-NSF and ETA-no NSF group at 3 and 6 months after surgery, the percentage of patients with significant change (≥0.8) in the SNOT-20 score was higher in the NSF used group at 1, 3, and 6 months postoperatively (22.92% vs. 13.51%, P = .029; 20.59% vs. 5.59%, P = .039; and 24.00% vs. 4.03%, P = .003, respectively). According to multivariate analysis conducted regarding factors that deteriorate sinonasal QOL at 6 months following surgery, only NSF usage is significantly associated with poor outcome (odds ratio: 4.371, P = .011) CONCLUSIONS: Sinonasal-related QOL was significantly worse in patients treated by the EEEA versus ETA. Use of an NSF is the only poor prognostic factor in sinonasal QOL after endoscopic skull base surgery.
Level Of Evidence:
2b Laryngoscope, 129:1318-1324, 2019.
Related Concept Videos
Half-life of a Reaction
The Angiosperm Life Cycle
Characteristics of Life
Sutures of the Skull
Sutures are immobile joints between adjacent bones of the skull. The narrow gap between the bones is filled with dense, fibrous connective tissue that unites the bones. The long sutures located between the skull bones are not straight but instead follow irregular, tightly twisting paths. These twisting lines tightly...
The Tree of Life - Bacteria, Archaea, Eukaryotes
Overview of the Skull
The cranial vault surrounds and protects the brain and houses the middle and inner ear structures. This cavity is bounded superiorly by the rounded top of the skull, which...

