Purpose: This study aims to investigate and compare the incidence, demographic characteristics, clinical manifestations, preoperative diagnostic methods, anatomical classifications, associated anomalies, operative treatments, and postoperative outcomes of patients with intestinal atresia treated by the members of the Korean Association of Pediatric Surgeons (KAPS) through three nationwide surveys. Methods: KAPS conducted 3 national surveys in 1998, 2010, and 2024 to examine the patients diagnosed with intestinal atresia. In preparation for the survey, we developed a customized case registration form to obtain data on patient sex, birth weight, gestational age, clinical manifestations, preoperative diagnostic methods, anatomical types, associated anomalies, operative treatments, and postoperative outcomes. Authorized KAPS members completed the case registration form. Results: The first, second, and third national surveys included 218, 222, and 236 individuals diagnosed with intestinal atresia, respectively. The male-to-female ratios were 1.5:1, 1.1:1, and 1.1:1, respectively. The first, second, and third national surveys revealed that 34.3%, 43.3%, and 53.4% of patients were born before 37 weeks of gestation, respectively. Additionally, 28.7%, 32.0%, and 40.7% of patients had a birth weight under 2,500 g. In the third national survey, duodenoduodenostomy was the most common procedure, performed in 70 out of 82 patients diagnosed with duodenal atresia. Resection and anastomosis were the main surgical procedures conducted in 47 out of 54 cases of jejunal atresia and 74 out of 92 cases of ileal atresia. The mortality rates in the first, second, and third national surveys were 13.8%, 3.6%, and 1.3% respectively, with the lowest rate observed in the third national survey. Conclusion These national surveys offer valuable insights into the current state of intestinal atresia, including specific surgical interventions and postoperative outcomes in South Korea. For pediatric surgeons aiming to enhance their understanding of intestinal atresia and its treatment options, these surveys could be an indispensable resource and guide.

Background: This study aims to delineate the characteristic features of adjustment disorder (AjD) from those of posttraumatic stress disorder (PTSD) and assess the discriminant validity of Diagnostic and statistical manual of mental disorders (DSM)-5 PTSD measures by comparing self-reported data from an outpatient cohort. Methods: The study participants included psychiatric outpatients at a university-affiliated hospital in South Korea.Psychological assessments comprised the Post-Traumatic Stress Disorder Checklist for DSM-5, the National Stressful Events Survey-PTSD Short Scale, the Beck Depression Inventory-II, the Beck Anxiety Inventory, the Insomnia Severity Index, and the Short Form-8 Health Survey. Results: A total of 149 responses (51 participants with AjD and 98 with PTSD) were analyzed. It was observed that workplace conflict was the most common stressor among AjD patients (29%), while traffic accidents were the primary trauma source for PTSD patients (39%). Individuals with AjD reported significantly lower levels of PTSD, depression, anxiety, and insomnia symptoms, along with a higher quality of life. After controlling for educational level as a covariate, the differences in PTSD and depressive symptoms remained significant. Conclusion The findings of this study support the discriminant validity of DSM-5 PTSD measures for AjD and reinforce the notion that that AjD represents a milder form within the stress response spectrum.

Background: This study aims to delineate the characteristic features of adjustment disorder (AjD) from those of posttraumatic stress disorder (PTSD) and assess the discriminant validity of Diagnostic and statistical manual of mental disorders (DSM)-5 PTSD measures by comparing self-reported data from an outpatient cohort. Methods: The study participants included psychiatric outpatients at a university-affiliated hospital in South Korea.Psychological assessments comprised the Post-Traumatic Stress Disorder Checklist for DSM-5, the National Stressful Events Survey-PTSD Short Scale, the Beck Depression Inventory-II, the Beck Anxiety Inventory, the Insomnia Severity Index, and the Short Form-8 Health Survey. Results: A total of 149 responses (51 participants with AjD and 98 with PTSD) were analyzed. It was observed that workplace conflict was the most common stressor among AjD patients (29%), while traffic accidents were the primary trauma source for PTSD patients (39%). Individuals with AjD reported significantly lower levels of PTSD, depression, anxiety, and insomnia symptoms, along with a higher quality of life. After controlling for educational level as a covariate, the differences in PTSD and depressive symptoms remained significant. Conclusion The findings of this study support the discriminant validity of DSM-5 PTSD measures for AjD and reinforce the notion that that AjD represents a milder form within the stress response spectrum.

Background: This study aims to delineate the characteristic features of adjustment disorder (AjD) from those of posttraumatic stress disorder (PTSD) and assess the discriminant validity of Diagnostic and statistical manual of mental disorders (DSM)-5 PTSD measures by comparing self-reported data from an outpatient cohort. Methods: The study participants included psychiatric outpatients at a university-affiliated hospital in South Korea.Psychological assessments comprised the Post-Traumatic Stress Disorder Checklist for DSM-5, the National Stressful Events Survey-PTSD Short Scale, the Beck Depression Inventory-II, the Beck Anxiety Inventory, the Insomnia Severity Index, and the Short Form-8 Health Survey. Results: A total of 149 responses (51 participants with AjD and 98 with PTSD) were analyzed. It was observed that workplace conflict was the most common stressor among AjD patients (29%), while traffic accidents were the primary trauma source for PTSD patients (39%). Individuals with AjD reported significantly lower levels of PTSD, depression, anxiety, and insomnia symptoms, along with a higher quality of life. After controlling for educational level as a covariate, the differences in PTSD and depressive symptoms remained significant. Conclusion The findings of this study support the discriminant validity of DSM-5 PTSD measures for AjD and reinforce the notion that that AjD represents a milder form within the stress response spectrum.

Background: This study aims to delineate the characteristic features of adjustment disorder (AjD) from those of posttraumatic stress disorder (PTSD) and assess the discriminant validity of Diagnostic and statistical manual of mental disorders (DSM)-5 PTSD measures by comparing self-reported data from an outpatient cohort. Methods: The study participants included psychiatric outpatients at a university-affiliated hospital in South Korea.Psychological assessments comprised the Post-Traumatic Stress Disorder Checklist for DSM-5, the National Stressful Events Survey-PTSD Short Scale, the Beck Depression Inventory-II, the Beck Anxiety Inventory, the Insomnia Severity Index, and the Short Form-8 Health Survey. Results: A total of 149 responses (51 participants with AjD and 98 with PTSD) were analyzed. It was observed that workplace conflict was the most common stressor among AjD patients (29%), while traffic accidents were the primary trauma source for PTSD patients (39%). Individuals with AjD reported significantly lower levels of PTSD, depression, anxiety, and insomnia symptoms, along with a higher quality of life. After controlling for educational level as a covariate, the differences in PTSD and depressive symptoms remained significant. Conclusion The findings of this study support the discriminant validity of DSM-5 PTSD measures for AjD and reinforce the notion that that AjD represents a milder form within the stress response spectrum.

Background: This study aims to delineate the characteristic features of adjustment disorder (AjD) from those of posttraumatic stress disorder (PTSD) and assess the discriminant validity of Diagnostic and statistical manual of mental disorders (DSM)-5 PTSD measures by comparing self-reported data from an outpatient cohort. Methods: The study participants included psychiatric outpatients at a university-affiliated hospital in South Korea.Psychological assessments comprised the Post-Traumatic Stress Disorder Checklist for DSM-5, the National Stressful Events Survey-PTSD Short Scale, the Beck Depression Inventory-II, the Beck Anxiety Inventory, the Insomnia Severity Index, and the Short Form-8 Health Survey. Results: A total of 149 responses (51 participants with AjD and 98 with PTSD) were analyzed. It was observed that workplace conflict was the most common stressor among AjD patients (29%), while traffic accidents were the primary trauma source for PTSD patients (39%). Individuals with AjD reported significantly lower levels of PTSD, depression, anxiety, and insomnia symptoms, along with a higher quality of life. After controlling for educational level as a covariate, the differences in PTSD and depressive symptoms remained significant. Conclusion The findings of this study support the discriminant validity of DSM-5 PTSD measures for AjD and reinforce the notion that that AjD represents a milder form within the stress response spectrum.

Ectopic thymic neoplasm, particularly ectopic thymic carcinoma, is a rare disease that presents as a neck mass. Here, we present a case of ectopic thymic squamous carcinoma in a 65-year-old man who presented with persistent hoarseness. After fine needle aspiration cytology, the patient underwent total thyroidectomy with lymph node dissection. The final histopathological examination revealed the ectopic thymic squamous carcinoma. The patient was discharged without any postoperative complications. The patient received adjuvant radiation therapy and did not progress during the 1-year follow-up period.

Economic evaluations in the healthcare are used to assess economic efficiency of pharmaceuticals and medical interventions such as diagnoses and medical procedures. This study introduces the main concepts of economic evaluation across its key steps: planning, outcome and cost calculation, modeling, cost-effectiveness results, uncertainty analysis, and decision-making. When planning an economic evaluation, we determine the study population, intervention, comparators, perspectives, time horizon, discount rates, and type of economic evaluation. In healthcare economic evaluations, outcomes include changes in mortality, the survival rate, life years, and quality-adjusted life years, while costs include medical, non-medical, and productivity costs. Model-based economic evaluations, including decision tree and Markov models, are mainly used to calculate the total costs and total effects. In cost-effectiveness or costutility analyses, cost-effectiveness is evaluated using the incremental cost-effectiveness ratio, which is the additional cost per one additional unit of effectiveness gained by an intervention compared with a comparator. All outcomes have uncertainties owing to limited evidence, diverse methodologies, and unexplained variation. Thus, researchers should review these uncertainties and confirm their robustness. We hope to contribute to the establishment and dissemination of economic evaluation methodologies that reflect Korean clinical and research environment and ultimately improve the rationality of healthcare policies.

Purpose: This study aimed to evaluate the effects of bladder cuff method on oncological outcomes in patients who underwent radical nephroureterectomy (RNU) for upper tract urothelial carcinoma. Materials and Methods: The records of 1,095 patients treated with RNU performed at our hospital between 1994 and 2018 were retrospectively reviewed; 856 patients with no bladder tumor history were enrolled in the present study. The management of bladder cuff was divided into two categories: extravesical ligation (EL) or transvesical resection (TR). Survival was analyzed using the Kaplan-Meier method and Cox regression analyses were performed to determine which factors were associated with intravesical recurrence (IVR)–free survival (IVRFS), cancer-specific survival (CSS), and overall survival (OS). Results: The mean patient age was 64.8 years and the median follow-up was 37.7 months. Among the 865 patients, 477 (55.7%) underwent the TR and 379 (44.3%) the EL. Significantly higher IVRFS (p=0.001) and OS (p=0.013) were observed in the TR group. In multivariable analysis, IVR, CSS, and OS were independently associated with the EL. Among 379 patients treated with the EL, eight underwent remnant ureterectomy. Based on radical cystectomy–free survival, significant difference was not observed between the two groups. However, significantly higher IVRFS was observed in the TR group when the tumor was located in the renal pelvis. Conclusion Intramural complete excision of the distal ureter during RNU should be the gold standard approach compared with EL for the management of distal ureter in terms of oncological outcomes.

Background: According to the recent coronavirus disease 2019 (COVID-19) pandemic experience, many emergency departments experience difficulties in responding to emerging infectious diseases and this has led to a public health crisis. Our emergency department (ED) is designed to respond to mass outbreaks of infection. Three major preparations were taken to respond to infectious disease; first, to improve the emergency department facilities;second, to created programs to respond to each phase of an epidemic of COVID-19; lastly, to implemented education and training to promote the safety of medical staff. We would like to share the actual responses and statistics of patients visiting emergency department during COVID-19 periods of pandemic. Materials and Methods: This research was conducted through a retrospective chart analysis provided by a public medical center with 502 beds since the first report of a COVID-19 confirmed case on January 19, 2020 to June 15, 2020 in Seoul, the capital of Korea. Our emergency department was designed based on Korean Regional Emergency Center Facility Standards, and modified throughout each phases of COVID-19 outbreak. Patients suspected to be infectious are screened in the triage, separating them from general patients, and then receive isolation treatment in isolated wards. Results: A total of 4,352 patients visited the ED. 3,202 screenings were conducted with 5 confirmed cases. Another 1,150 patients were treated with general emergent symptoms.There were no problems such as closure of the emergency department or isolation of medical staff while managing COVID-19 confirmed patients. Conclusion Improving emergency department facilities, create an operational program to respond to each phase of COVID-19 outbreak and implement educational programs enabled large number of screening tests and hospitalization for COVID-19 suspected patients while maintaining general medical services. Research in emergency department designs and operational programs should increase to combine research data with better ideas to respond not only during regular periods but also during periods of pandemic.