Tae-Bin Won

OBJECTIVES/HYPOTHESIS: This study aimed to evaluate changes in obstruction site in obstructive sleep apnea (OSA) patients according to sleep position. STUDY DESIGN: Prospective case series. METHODS: Eighty-five patients who had undergone level 1 sleep study and drug-induced sleep endoscopy in the supine and lateral positions were included. Obstruction sites were classified as soft palate (SP), tongue base (TB), lateral wall (LW), and larynx (LX). Subgroup analysis was performed according to late

BACKGROUND: The aim of this work was to evaluate factors that influence local recurrence and survival after surgical resection of sinonasal malignant melanoma, using a large population-based multicenter study in Korea. METHODS: Retrospective analysis was performed for 155 newly diagnosed sinonasal malignant melanoma patients gathered from 15 university hospitals throughout Korea. Demographic data, tumor characteristics, surgical approach, adjuvant treatment, recurrence, and outcomes were analyze

BACKGROUND: With the help of contemporary computer technology it is possible to create a virtual surgical environment (VSE) for training. This article describes a patient-specific virtual rhinologic surgical simulation platform that supports rehearsal of endoscopic skull-base surgery. We also share our early experience with select cases. METHODS: A rhinologic VSE was developed, featuring a highly efficient direct 3-dimensional (3D) volume renderer with simultaneous stereoscopic feedback during s

The abundance, biocompatibility, and versatility of autologous costal cartilage allow rhinoplasty surgeons to perform an array of maneuvers needed to successfully manage cases that require an ample source of grafting materials. Hence, there has been a steady increase in the use of costal cartilage in Asian rhinoplasty. Despite its many advantages, autologous costal cartilage rhinoplasty is also associated with complications, which include warping, infection, and displacement, as well as donor-si

Revision rhinoplasty is increasing in the Asian population. We present causes of revision rhinoplasty in Asians, introduce operative techniques, report surgical results, and make implications for ways to assist in their prevention. During a period of 3 years, 52 patients (among 623 rhinoplasties) who had undergone revision rhinoplasty with at least 1 year follow-up were included in this study. A retrospective review was performed using chart review, graphic operation records, pre- and postoperat

OBJECTIVE: To assess the feasibility of immediate reconstruction with autologous cartilage after removal of infected alloplast in revision rhinoplasty. STUDY DESIGN: Case series with chart review. SETTING: Academic university hospital. SUBJECTS AND METHODS: Patients who met the following inclusion criteria were the subjects of the present study: (1) revision rhinoplasty, (2) alloplastic implant-related infection, (3) immediate reconstruction with autologous cartilage at the time of implant remov

Objective The aim of this study was to investigate the regeneration process of the nasal mucosa after a surgically created mucosal defect in the rabbit nasal septum, and to evaluate the effects of different interventions. Methods A 7 mm‐diameter circular mucosal defect was made in the septum of forty New Zealand white rabbits. The rabbits were divided into four groups (ten rabbits in each group) according to the type of intervention; no treatment (control), silastic sheet (SS), hyaluronic acid (

Mean value of peak frequency showed significant difference between soft palate and isolated tongue base or epiglottis obstruction and combined obstruction involving soft palate and tongue base or epiglottis. Peak frequency of velopharyngeal obstruction showed difference only with hypopharyngeal obstruction. First formant showed similar results in the structure classification whereas velopharyngeal obstruction showed significant difference compared with other levels of obstruction. Other paramete

This is the first study that aimed to assess the effects of septorhinoplasty on quality of life (QOL) in an Asian population. The study consisted of 2 parts. First, the Derriford Appearance Scale 59 (DAS-59) was translated into Korean, and the reliability and validity were assessed by administering the Korean version of Derriford Appearance Scale 59 (DAS-59K) and 36-item short-form health survey to 88 inpatients scheduled for operations. Then, a prospective study was conducted which included 31

Nasal endoscopy is routinely performed to distinguish the pathological types of masses. There is a lack of studies on deep learning algorithms for discriminating a wide range of endoscopic nasal cavity mass lesions. Therefore, we aimed to develop an endoscopic-examination-based deep learning model to detect and classify nasal cavity mass lesions, including nasal polyps (NPs), benign tumors, and malignant tumors. The clinical feasibility of the model was evaluated by comparing the results to thos

Background: Although endoscopic endonasal approach (EEA) for skull base tumors showed a good prognosis in sinonasal quality of life (QOL), what factors have influence on QOL is still in question.Aim/Objectives: To investigate the recovery of sinonasal QOL after EEA for anterior skull base tumors and find its prognostic factors.Material and Methods: The study enrolled 250 patients undergoing EEA for anterior skull base tumors over 3 years. Sinonasal QOL was evaluated via sinonasal outcome test (S

In all, 62% of the patients were responders, i.e. had a decreased polyp size >25% after treatment. SNOT-20 score tended to decrease for all patients but significantly only for the responder group (p < 0.01). Eighteen of the responders had a medical history of allergic rhinitis, but only five of the nonresponders did (p = 0.026, Odds ratio = 4.26). Responder group polyps showed significantly less immunoreactivity of glucocorticoid receptor β than polyps from the nonresponder group.

Three distinct groups undergoing different techniques to correct the deformity were noted. Eighteen patients (72%) with intact septal support were treated by straightening the nose and septum followed by simple onlay grafts. Five patients (20%) with loss of septal support needed septal reconstruction. In two patients (8%) showing deviation, generalized saddling, and loss of septal support, a dorsal graft integrated to an extended columellar strut was performed, bypassing the major septal reconst

BACKGROUND: We recently introduced a patient-specific rhinologic virtual surgical environment (VSE) that has shown potential for surgical rehearsal of various skull base lesions. Our aim in this study was to validate the usefulness of the rhinology VSE in performing the Draf 3 procedure. METHODS: An outside-in Draf 3 procedure was performed on 4 cadaver heads. Computed tomography (CT) scans were obtained before and after cadaver dissection (CD). Pre-dissection CT scans were used to construct a c

(1) Background: Various surgical approaches have been introduced to resect inverted papillomas (IP) stemming from the maxillary sinus (MS). This study aimed to compare the recurrence rates of IPs originating from the MS according to various surgical modalities. (2) Methods: A total of 155 surgical cases of sinonasal IPs originating from the MS were categorized into three groups according to the surgical approach adopted: endoscopic resection via middle or inferior meatus antrostomy (ESS), ESS wi