1.Influence of Insurance Status on Survival of Surgically Treated Esophageal Cancer Patients.
Yoohwa HWANG ; Se Jin OH ; Jae Sung CHOI ; Ji Won KIM ; Jeong Sang LEE ; Hyun Jong MOON
The Korean Journal of Gastroenterology 2018;72(1):15-20
		                        		
		                        			
		                        			BACKGROUND/AIMS: Socioecomomic factor is an important determinant of access to healthcare and is one of the potential causes of disparities in esophageal cancer care outcomes. The aim of the study was to clarify the association between National health Insurance status (health insurance vs. medicare) as a socioeconomic factor and survival of patients with esophageal cancer who underwent surgical resection. METHODS: Among the 66 patients who underwent surgical resection for esophageal cancer between January 2006 and December 2017, 17 patients (25.8%) were in the medicare group. The data were analyzed to identify clinical manifestations and to compare surgical and oncologic outcomes between the groups. RESULTS: There was no significant difference in the distribution of sex (p=0.13), age (p=0.24), and pathologic stage (p=0.61) between the groups. The length of median hospital stay was significantly shorter in the healthy insurance group (18 days vs. 25 days, p=0.04). In the medicare group, postoperative mortality rates and incidence of postoperative complication were non-significantly higher (11.8% vs. 6.1%, p=0.45, 64.7% vs. 46.7%, p=0.21, respectively). However, pulmonary complication rates, including pneumonia, acute respiratory distress syndorme, and prolonged air leakage was significantly higher in the medicare group (47.1% vs. 18.4%, p=0.02). Five-year disease free survival rate was not different between the two groups (61.0% vs. 54.5%, p=0.68); the 5-year overall survival rate was significantly lower in the medicare group (27.7% vs. 53.7%, p=0.03). CONCLUSIONS: The medicare status of National health insurance could have a negative influence on the overall survival in patients with esophageal cancer who underwent surgery.
		                        		
		                        		
		                        		
		                        			Delivery of Health Care
		                        			;
		                        		
		                        			Disease-Free Survival
		                        			;
		                        		
		                        			Esophageal Neoplasms*
		                        			;
		                        		
		                        			Fibrinogen
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Incidence
		                        			;
		                        		
		                        			Insurance Coverage*
		                        			;
		                        		
		                        			Insurance*
		                        			;
		                        		
		                        			Length of Stay
		                        			;
		                        		
		                        			Medicare
		                        			;
		                        		
		                        			Mortality
		                        			;
		                        		
		                        			National Health Programs
		                        			;
		                        		
		                        			Pneumonia
		                        			;
		                        		
		                        			Postoperative Complications
		                        			;
		                        		
		                        			Socioeconomic Factors
		                        			;
		                        		
		                        			Survival Rate
		                        			
		                        		
		                        	
2.Patterns and Prognostic Significance of Cervical Lymph Node Metastasis and the Efficacy of Cervical Node Dissection in Esophageal Cancer.
Yoonjin KANG ; Yoohwa HWANG ; Hyun Ju LEE ; In Kyu PARK ; Young Tae KIM ; Chang Hyun KANG
The Korean Journal of Thoracic and Cardiovascular Surgery 2017;50(5):329-338
		                        		
		                        			
		                        			BACKGROUND: The clinical value of 3-field lymph node dissection (3FLND) in esophageal squamous cell carcinoma (ESCC) remains controversial. This study aimed to identify the patterns and prognostic significance of cervical lymph node metastasis (CLNM) in ESCC. METHODS: A retrospective review of 77 patients with ESCC who underwent esophagectomy and 3FLND between 2002 and 2016 was conducted. For each cervical node level, the efficacy index (EI), overall survival, recurrence rate, and complication rate were compared. RESULTS: CLNM was identified in 34 patients (44.2%) who underwent 3FLND. Patients with CLNM had a significantly lower overall survival rate (22.7% vs. 58.2%) and a higher recurrence rate (45.9% vs. 16.3%) than patients without CLNM. CLNM was an independent predictor of recurrence in ESCC patients. Moreover, in patients with pathologic N3 tumors, the odds ratio of CLNM was 10.8 (95% confidence interval, 2.0 to 57.5; p= 0.005). Level IV dissection had the highest EI, and level IV metastasis was significantly correlated with overall survival (p=0.012) and recurrence (p=0.001). CONCLUSION: CLNM was a significant prognostic factor for ESCC patients and was more common among patients with advanced nodal stages. Level IV exhibited the highest risk of metastasis, and dissection at level IV may be crucial when performing 3FLND, especially in advanced nodal stage disease.
		                        		
		                        		
		                        		
		                        			Carcinoma, Squamous Cell
		                        			;
		                        		
		                        			Esophageal Neoplasms*
		                        			;
		                        		
		                        			Esophagectomy
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Lymph Node Excision
		                        			;
		                        		
		                        			Lymph Nodes*
		                        			;
		                        		
		                        			Neoplasm Metastasis*
		                        			;
		                        		
		                        			Odds Ratio
		                        			;
		                        		
		                        			Recurrence
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Survival Rate
		                        			
		                        		
		                        	
3.Current Trends of Lung Cancer Surgery and Demographic and Social Factors Related to Changes in the Trends of Lung Cancer Surgery: An Analysis of the National Database from 2010 to 2014.
Samina PARK ; In Kyu PARK ; Eung Re KIM ; Yoohwa HWANG ; Hyun Joo LEE ; Chang Hyun KANG ; Young Tae KIM
Cancer Research and Treatment 2017;49(2):330-337
		                        		
		                        			
		                        			PURPOSE: We investigated current trends in lung cancer surgery and identified demographic and social factors related to changes in these trends. MATERIALS AND METHODS: We estimated the incidence of lung cancer surgery using a procedure code-based approach provided by the Health Insurance Review and Assessment Service (http://opendata.hira.or.kr). The population data were obtained every year from 2010 to 2014 from the Korean Statistical Information Service (http://kosis.kr/). The annual percent change (APC) and statistical significance were calculated using the Joinpoint software. RESULTS: From January 2010 to December 2014, 25,687 patients underwent 25,921 lung cancer surgeries, which increased by 45.1% from 2010 to 2014. The crude incidence rate of lung cancer surgery in each year increased significantly (APC, 9.5; p < 0.05). The male-to-female ratio decreased from 2.1 to 1.6 (APC, −6.3; p < 0.05). The incidence increased in the age group of ≥ 70 years for both sexes (male: APC, 3.7; p < 0.05; female: APC, 5.96; p < 0.05). Furthermore, the proportion of female patients aged ≥ 65 years increased (APC, 7.2; p < 0.05), while that of male patients aged < 65 years decreased (APC, −3.9; p < 0.05). The proportions of segmentectomies (APC, 17.8; p < 0.05) and lobectomies (APC, 7.5; p < 0.05) increased, while the proportion of pneumonectomies decreased (APC, −6.3; p < 0.05). Finally, the proportion of patients undergoing surgery in Seoul increased (APC, 1.1; p < 0.05), while the proportion in other areas decreased (APC, −1.5; p < 0.05). CONCLUSION: An increase in the use of lung cancer surgery in elderly patients and female patients, and a decrease in the proportion of patients requiring extensive pulmonary resection were identified. Furthermore, centralization of lung cancer surgery was noted.
		                        		
		                        		
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Incidence
		                        			;
		                        		
		                        			Information Services
		                        			;
		                        		
		                        			Insurance, Health
		                        			;
		                        		
		                        			Lung Neoplasms*
		                        			;
		                        		
		                        			Lung*
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Mastectomy, Segmental
		                        			;
		                        		
		                        			Pneumonectomy
		                        			;
		                        		
		                        			Republic of Korea
		                        			;
		                        		
		                        			Seoul
		                        			;
		                        		
		                        			Thoracic Surgery
		                        			
		                        		
		                        	
4.Successful Lung Transplantation in a Patient with Myasthenia Gravis.
Kangmin KIM ; Hyun Joo LEE ; Samina PARK ; Yoohwa HWANG ; Young Whan KIM ; Young Tae KIM
The Korean Journal of Thoracic and Cardiovascular Surgery 2017;50(5):382-385
		                        		
		                        			
		                        			A 47-year-old man with myasthenia gravis (MG) was admitted for a lung transplant. He had bronchiolitis obliterans after allogeneic hematopoietic stem cell transplantation due to acute myeloid leukemia. MG developed after stem cell transplantation. Bilateral sequential lung transplantations and a total thymectomy were performed. The patient underwent right diaphragmatic plication simultaneously due to preoperatively diagnosed right diaphragmatic paralysis. A tracheostomy was performed and bilevel positive airway pressure (BiPAP) was applied on postoperative days 8 and 9, respectively. The patient was transferred to the general ward on postoperative day 12, successfully weaned off BiPAP on postoperative day 18, and finally discharged on postoperative day 62.
		                        		
		                        		
		                        		
		                        			Bronchiolitis Obliterans
		                        			;
		                        		
		                        			Hematopoietic Stem Cell Transplantation
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Leukemia, Myeloid, Acute
		                        			;
		                        		
		                        			Lung Transplantation*
		                        			;
		                        		
		                        			Lung*
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Myasthenia Gravis*
		                        			;
		                        		
		                        			Patients' Rooms
		                        			;
		                        		
		                        			Respiratory Paralysis
		                        			;
		                        		
		                        			Stem Cell Transplantation
		                        			;
		                        		
		                        			Thymectomy
		                        			;
		                        		
		                        			Tracheostomy
		                        			
		                        		
		                        	
5.Successful Lung Transplantation in a Patient with Myasthenia Gravis.
Kangmin KIM ; Hyun Joo LEE ; Samina PARK ; Yoohwa HWANG ; Young Whan KIM ; Young Tae KIM
The Korean Journal of Thoracic and Cardiovascular Surgery 2017;50(5):382-385
		                        		
		                        			
		                        			A 47-year-old man with myasthenia gravis (MG) was admitted for a lung transplant. He had bronchiolitis obliterans after allogeneic hematopoietic stem cell transplantation due to acute myeloid leukemia. MG developed after stem cell transplantation. Bilateral sequential lung transplantations and a total thymectomy were performed. The patient underwent right diaphragmatic plication simultaneously due to preoperatively diagnosed right diaphragmatic paralysis. A tracheostomy was performed and bilevel positive airway pressure (BiPAP) was applied on postoperative days 8 and 9, respectively. The patient was transferred to the general ward on postoperative day 12, successfully weaned off BiPAP on postoperative day 18, and finally discharged on postoperative day 62.
		                        		
		                        		
		                        		
		                        			Bronchiolitis Obliterans
		                        			;
		                        		
		                        			Hematopoietic Stem Cell Transplantation
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Leukemia, Myeloid, Acute
		                        			;
		                        		
		                        			Lung Transplantation*
		                        			;
		                        		
		                        			Lung*
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Myasthenia Gravis*
		                        			;
		                        		
		                        			Patients' Rooms
		                        			;
		                        		
		                        			Respiratory Paralysis
		                        			;
		                        		
		                        			Stem Cell Transplantation
		                        			;
		                        		
		                        			Thymectomy
		                        			;
		                        		
		                        			Tracheostomy
		                        			
		                        		
		                        	
6.Surgical Management of Aorto-Esophageal Fistula as a Late Complication after Graft Replacement for Acute Aortic Dissection.
Jae Hong LEE ; Bubse NA ; Yoohwa HWANG ; Yong Han KIM ; In Kyu PARK ; Kyung Hwan KIM
The Korean Journal of Thoracic and Cardiovascular Surgery 2016;49(1):54-58
		                        		
		                        			
		                        			A 49-year-old male presented with chills and a fever. Five years previously, he underwent ascending aorta and aortic arch replacement using the elephant trunk technique for DeBakey type 1 aortic dissection. The preoperative evaluation found an esophago-paraprosthetic fistula between the prosthetic graft and the esophagus. Multiple-stage surgery was performed with appropriate antibiotic and antifungal management. First, we performed esophageal exclusion and drainage of the perigraft abscess. Second, we removed the previous graft, debrided the abscess, and performed an in situ re-replacement of the ascending aorta, aortic arch, and proximal descending thoracic aorta, with separate replacement of the innominate artery, left common carotid artery, and extra-anatomical bypass of the left subclavian artery. Finally, staged esophageal reconstruction was performed via transthoracic anastomosis. The patient's postoperative course was unremarkable and the patient has done well without dietary problems or recurrent infections over one and a half years of follow-up.
		                        		
		                        		
		                        		
		                        			Abscess
		                        			;
		                        		
		                        			Aorta
		                        			;
		                        		
		                        			Aorta, Thoracic
		                        			;
		                        		
		                        			Brachiocephalic Trunk
		                        			;
		                        		
		                        			Carotid Artery, Common
		                        			;
		                        		
		                        			Chills
		                        			;
		                        		
		                        			Drainage
		                        			;
		                        		
		                        			Elephants
		                        			;
		                        		
		                        			Esophagus
		                        			;
		                        		
		                        			Fever
		                        			;
		                        		
		                        			Fistula*
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Subclavian Artery
		                        			;
		                        		
		                        			Transplants*
		                        			
		                        		
		                        	
7.Acute Peripheral Arterial Tumorous Embolism after Lung Cancer Surgery.
Yoohwa HWANG ; Hyun Joo LEE ; Young Tae KIM
Korean Journal of Critical Care Medicine 2015;30(3):234-237
		                        		
		                        			
		                        			Systemic tumor embolisms after pulmonary resections for malignancy are rare, but usually severe and sometimes fatal. Here, we report a case of a 70-year-old woman who underwent pulmonary resection for lung cancer and subsequently developed acute arterial occlusion of the lower extremities caused by a tumorous embolus.
		                        		
		                        		
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Embolectomy
		                        			;
		                        		
		                        			Embolism*
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Femoral Artery
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Lower Extremity
		                        			;
		                        		
		                        			Lung Neoplasms*
		                        			;
		                        		
		                        			Lung*
		                        			;
		                        		
		                        			Neoplastic Cells, Circulating
		                        			
		                        		
		                        	
8.Acute Peripheral Arterial Tumorous Embolism after Lung Cancer Surgery
Yoohwa HWANG ; Hyun Joo LEE ; Young Tae KIM
The Korean Journal of Critical Care Medicine 2015;30(3):234-237
		                        		
		                        			
		                        			Systemic tumor embolisms after pulmonary resections for malignancy are rare, but usually severe and sometimes fatal. Here, we report a case of a 70-year-old woman who underwent pulmonary resection for lung cancer and subsequently developed acute arterial occlusion of the lower extremities caused by a tumorous embolus.
		                        		
		                        		
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Embolectomy
		                        			;
		                        		
		                        			Embolism
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Femoral Artery
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Lower Extremity
		                        			;
		                        		
		                        			Lung Neoplasms
		                        			;
		                        		
		                        			Lung
		                        			;
		                        		
		                        			Neoplastic Cells, Circulating
		                        			
		                        		
		                        	
9.Early Postoperative 24-Hour Continuous Jejunostomy Feeding in Esophagectomy Patients.
Jeong Hyun LIM ; Dal Lae JU ; Yoohwa HWANG ; Chang Hyun KANG
Clinical Nutrition Research 2014;3(1):69-73
		                        		
		                        			
		                        			Esophagectomy can result in various postoperative nutrition-related complications that may impair the nutritional status of the patient. In our institution, we usually initiate 16-hour continuous jejunostomy feeding using an enteral feeding pump on postoperative day 2 as a routine protocol after esophagectomy. The target calorie intake was achieved in 6-7 days with this protocol, which is longer than that required with other recently reported feeding protocols. Accordingly, early jejunostomy feeding protocol, which starts on postoperative day 1 and continues for 24 hours was attempted. In the present report, we described 3 cases of early 24-hour continuous jejunostomy feeding after esophagectomy. The use of this new protocol reduced the duration required to achieve the target calorie intake as less than 5 days without any enteral feeding-related complications.
		                        		
		                        		
		                        		
		                        			Enteral Nutrition
		                        			;
		                        		
		                        			Esophagectomy*
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Jejunostomy*
		                        			;
		                        		
		                        			Nutritional Status
		                        			
		                        		
		                        	
10.Reverse V-Shape Kinking of the Left Lower Lobar Bronchus after a Left Upper Lobectomy and Its Surgical Correction.
Min Seok KIM ; Yoohwa HWANG ; Hye Seon KIM ; In Kyu PARK ; Chang Hyun KANG ; Young Tae KIM
The Korean Journal of Thoracic and Cardiovascular Surgery 2014;47(5):483-486
		                        		
		                        			
		                        			A 76-year-old male underwent a left upper lobectomy with wedge resection of the superior segment of the left lower lobe using video-assisted thoracoscopic surgery (VATS) for non-small-cell lung cancer of the left upper lobe. He presented with shortness of breath, fever, and leukocytosis. Chest radiography showed atelectasis at the remaining left lower lobe. Bronchoscopy revealed narrowing of the left lower bronchus with purulent secretion, and computed tomography showed downward kinking of the left lower lobar bronchus. He underwent exploratory VATS, and intraoperative findings showed an inferiorly kinked left lower lobar bronchus with upward displacement of the left lower lobe. After adhesiolysis, the kinked bronchus was straightened, and bronchopexy was performed to the pericardium to prevent the recurrence of bronchial kinking. Also, the inferior pulmonary ligament was reattached to prevent upward displacement. Postoperative follow-up bronchoscopy revealed no evidence of residual bronchial obstruction, and chest radiography showed no atelectasis thereafter.
		                        		
		                        		
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Airway Obstruction
		                        			;
		                        		
		                        			Bronchi*
		                        			;
		                        		
		                        			Bronchoscopy
		                        			;
		                        		
		                        			Dyspnea
		                        			;
		                        		
		                        			Fever
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Leukocytosis
		                        			;
		                        		
		                        			Ligaments
		                        			;
		                        		
		                        			Lung Neoplasms
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Pericardium
		                        			;
		                        		
		                        			Pulmonary Atelectasis
		                        			;
		                        		
		                        			Radiography
		                        			;
		                        		
		                        			Recurrence
		                        			;
		                        		
		                        			Thoracic Surgery, Video-Assisted
		                        			;
		                        		
		                        			Thorax
		                        			
		                        		
		                        	
            
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