Background and Objectives: Papillary thyroid carcinoma (PTC) with lateral neck lymph node metastasis is known as a major risk factor for tumor recurrence after surgical treatment. The aim of this study is to identify risk factors for loco-regional recurrence in patients with PTC with lateral neck lymph node metastasis, which has a high risk of recurrence.Subjects and Method This study involved 319 patients who underwent total thyroidectomy, central lymph node (LN) and lateral LN dissection due to PTC. The patients’ demographics and pathological factors, including lymph node metastasis were retrospectively reviewed. Univariate, multivariate and C-index with variable selection analyses were performed to identify factors associated with recurrence-free survival (RFS). Results: A mean follow-up of 101 months, 35 (10.9%) patients had a loco-regional recurrence. In multivariate analysis according to loco-regional recurrence, patients with a primary tumor of more than 4 cm, multifocality, vascular invasion, and bilateral lateral cervical metastasis were associated with worse RFS. In the variable selection analysis, lateral lymph node metastasis ratio was also statistically significant. Conclusion PTC with lateral neck lymph node metastasis included tumors larger than 4 cm. Multifocality, vascular invasion, high lateral lymph node metastasis ratio and bilateral neck lymph node metastasis are predictive factors of loco-regional recurrence, and these risk factors should be carefully followed-up after surgery.

Objective: With trends in population aging an increasing number of older patients are visiting the emergency department (ED). This study aimed to identify the characteristics of ED utilization and risk factors for in-hospital mortality in older patients who visited EDs. Methods: This nationwide observational study used National Emergency Department Information System data collected during a 2-year period from January 2016 to December 2017. The characteristics of older patients aged 70 years or older were compared with those of younger patients aged 20 to 69 years. Risk factors associated with in-hospital mortality were analyzed by multivariable logistic regression. Results: A total of 6,596,423 younger patients and 1,737,799 older patients were included. In the medical and nonmedical older patient groups, significantly higher proportions of patients were transferred from another hospital, utilized emergency medical services, had Korean Triage and Acuity Scale scores of 1 and 2, required hospitalization, and required intensive care unit admission in the older patient group than in the younger patient group. ED and post-hospitalization mortality rates increased with age; in particular, older medical patients aged 90 or older had an in-hospital mortality rate of 9%. Older age, male sex, transfer from another hospital, emergency medical service utilization, a high Korean Triage and Acuity Scale score, systolic blood pressure <100 mmHg, respiratory rate >20/min, heart rate >100/min, body temperature <36°C, and altered mental status were associated with in-hospital mortality. Conclusion Development of appropriate decision-making algorithms and treatment protocols for high risk older patients visiting the ED might facilitate appropriate allocation of medical resources to optimize outcomes.

A bezoar, a mixture of various undigested foreign substances in the gastrointestinal tract, causes intestinal obstruction at times. We report a case of non-surgical treatment in old age patient. An 89-year-old female presented with epigastric pain, general weakness, and intermittent melena for 1 month. There were episodic attacks of vomiting. An abdominal computed tomography scan showed a 5×4 cm, firm, atypically shaped mass at the stomach body and duodenal bulb with interspersed gas. Endoscopy showed a mass of fiber impacting the antrum pylorus, and the endoscopist failed to remove the bezoar at the first attempt. We subscribed olive oil for few days to make the bezoar small, and eventually, it was fragmented and removed without surgery. A phytobezoar is not uncommon disease required surgical removal if obstructive system developed.Ingestion of olive oil would be a helpful substitute for immediate operation in case of phytobezoar.

Objective: The bedside on-site ultrasound examination is a very useful diagnostic test for medically ill elderly emergency patients. However, it is not known whether it is being sufficiently used in the real world scenario. We investigated this aspect in patients with chest pain in two emergency departments in the Seoul metropolitan area. Methods: Elderly patients with chest pain who visited the two emergency departments from January 2019 to December 2019 were recruited using the ‘cardiogenic pain’ code, which is the third step classification of the Korean Triage and Acuity Scale, and their medical records were reviewed to confirm whether an emergency physician-performed ultrasound prescription code was entered. Results: Of the 744 elderly patients with chest pain, 66 were given bedside on-site ultrasound examinations. The rate of examination was 8.8%. Among the emergency departments, the local emergency departments accounted for 33 out of 389 patients (8.5%), and the regional emergency department accounted for 33 out of 355 (9.3%). Conclusion These results raise the need to check the extent of bedside on-site ultrasound examinations that are conducted in the initial care of medically ill emergency elderly patients nationwide.

Objective: The bedside on-site ultrasound examination is a very useful diagnostic test for medically ill elderly emergency patients. However, it is not known whether it is being sufficiently used in the real world scenario. We investigated this aspect in patients with chest pain in two emergency departments in the Seoul metropolitan area. Methods: Elderly patients with chest pain who visited the two emergency departments from January 2019 to December 2019 were recruited using the ‘cardiogenic pain’ code, which is the third step classification of the Korean Triage and Acuity Scale, and their medical records were reviewed to confirm whether an emergency physician-performed ultrasound prescription code was entered. Results: Of the 744 elderly patients with chest pain, 66 were given bedside on-site ultrasound examinations. The rate of examination was 8.8%. Among the emergency departments, the local emergency departments accounted for 33 out of 389 patients (8.5%), and the regional emergency department accounted for 33 out of 355 (9.3%). Conclusion These results raise the need to check the extent of bedside on-site ultrasound examinations that are conducted in the initial care of medically ill emergency elderly patients nationwide.

A bezoar, a mixture of various undigested foreign substances in the gastrointestinal tract, causes intestinal obstruction at times. We report a case of non-surgical treatment in old age patient. An 89-year-old female presented with epigastric pain, general weakness, and intermittent melena for 1 month. There were episodic attacks of vomiting. An abdominal computed tomography scan showed a 5×4 cm, firm, atypically shaped mass at the stomach body and duodenal bulb with interspersed gas. Endoscopy showed a mass of fiber impacting the antrum pylorus, and the endoscopist failed to remove the bezoar at the first attempt. We subscribed olive oil for few days to make the bezoar small, and eventually, it was fragmented and removed without surgery. A phytobezoar is not uncommon disease required surgical removal if obstructive system developed.Ingestion of olive oil would be a helpful substitute for immediate operation in case of phytobezoar.

Objective: With trends in population aging an increasing number of older patients are visiting the emergency department (ED). This study aimed to identify the characteristics of ED utilization and risk factors for in-hospital mortality in older patients who visited EDs. Methods: This nationwide observational study used National Emergency Department Information System data collected during a 2-year period from January 2016 to December 2017. The characteristics of older patients aged 70 years or older were compared with those of younger patients aged 20 to 69 years. Risk factors associated with in-hospital mortality were analyzed by multivariable logistic regression. Results: A total of 6,596,423 younger patients and 1,737,799 older patients were included. In the medical and nonmedical older patient groups, significantly higher proportions of patients were transferred from another hospital, utilized emergency medical services, had Korean Triage and Acuity Scale scores of 1 and 2, required hospitalization, and required intensive care unit admission in the older patient group than in the younger patient group. ED and post-hospitalization mortality rates increased with age; in particular, older medical patients aged 90 or older had an in-hospital mortality rate of 9%. Older age, male sex, transfer from another hospital, emergency medical service utilization, a high Korean Triage and Acuity Scale score, systolic blood pressure <100 mmHg, respiratory rate >20/min, heart rate >100/min, body temperature <36°C, and altered mental status were associated with in-hospital mortality. Conclusion Development of appropriate decision-making algorithms and treatment protocols for high risk older patients visiting the ED might facilitate appropriate allocation of medical resources to optimize outcomes.

Objective: The chest compression depth recommended in the current guidelines for average adult cardiopulmonary resuscitation is approximately 1/4-1/5 depth of the external chest anteroposterior (AP) diameter and at least 50 mm but less than 60 mm. The purpose of this study was to determine the proper compression depth in patients with amyotrophic lateral sclerosis (ALS). Methods: A retrospective analysis of the chest computed tomography scans obtained between January 2014 and December 2018 was performed, and the chest anatomical parameters, such as external, internal chest, and heart AP diameters, were measured. The primary outcomes were a 1/4 and 1/5 depth of an external chest AP diameter. Based on the values of these parameters, the heart compression fractures (HCF) and over compression depth (OCD) from 40 to 60 mm depths with every 5 mm interval were calculated. All outcomes in the two groups were compared. Results: Ninety three of 108 ALS and 93 of 17,150 healthy individuals were selected randomly from a database and analyzed. The mean±standard deviations of 1/4 and 1/5 depth of the external chest AP diameter in ALS were significantly lower than in healthy individuals (48.57±4.60 mm vs. 53.43±4.93 mm, 38.86±3.68 mm vs. 42.75±3.94 mm, respectively, all P<0.001). The HCF values were similar in the two groups. The number of OCD with 55 and 60 mm in the ALS group were increased (all P<0.05, univariate analysis) Conclusion An approximately 50 mm depth of chest compression could be appropriate, but an excessive depth greater than 55 mm is more likely to cause complications for ALS patients.

Background: Aortic dissection (AD) is one of the most catastrophic diseases and is associated with high morbidity and mortality. The aim of this study is to investigate the hospital incidence and mortality rates of thoracic AD in Korea using a nationwide database. Methods: We conducted a nationwide population-based study using the health claims data of the National Health Insurance Service in Korea. From 2005 to 2016, adult patients newly diagnosed with AD were included. All patients were divided into the following four subgroups by treatment: type A surgical repair (TASR), type B surgical repair (TBSR), thoracic endovascular aortic repair (TEVAR), and medical management (MM). The incidence rate, mortality rate, and risk factors of in-hospital mortality were evaluated. Results: In total, 18,565 patients were newly diagnosed with AD (TASR, n = 4,319 [23.3%];TBSR, n = 186 [1.0%]; TEVAR, n = 697 [3.8%]; MM, n = 13,363 [72.0%]). The overall AD incidence rate was 3.76 per 100,000 person-years and exhibited a gradual increase during the study period (3.29 to 4.82, P < 0.001). The overall in-hospital mortality rate was 10.84% and remained consistent (P = 0.57). However, the in-hospital mortality rate decreased in the TASR subgroup (18.23 to 11.27%, P = 0.046). An older age, the female sex, hypertension, and chronic kidney disease were independent risk factors for in-hospital mortality. Conclusion The incidence of thoracic AD has gradually increased in Korea. The in-hospital mortality in the TASR subgroup decreased over the decade, although the overall mortality of AD patients did not change.

In the article, the ‘Class’ of skeletal malocclusion was misprinted as ‘class’ in the main text. The publisher would like to apologize for any inconvenience caused.