1.Transcholecystic Duodenal Drainage as an Alternative Decompression Method for Afferent Loop Syndrome: Two Case Reports
Jihoon HONG ; Gab Chul KIM ; Jung Guen CHA ; Jongmin PARK ; Byunggeon PARK ; Seo Young PARK ; Sang Un KIM
Journal of the Korean Society of Radiology 2024;85(3):661-667
		                        		
		                        			
		                        			 Afferent loop syndrome (ALS) is a rare complication of gastrectomies and gastrointestinal reconstruction. This can predispose patients to fatal conditions, such as cholangitis, pancreatitis, and duodenal perforation with peritonitis. Therefore, emergency decompression is necessary to prevent these complications. Herein, we report two cases in which transcholecystic duodenal drainage, an alternative decompression treatment, was performed in ALS patients without bile duct dilatation. Two patients who underwent distal gastrectomy with Billroth II anastomosis sought consultation in an emergency department for epigastric pain and vomiting. On CT, ALS with acute pancreatitis was diagnosed. However, biliary access could not be achieved because of the absence of bile duct dilatation. To overcome this problem, a duodenal drainage catheter was placed to decompress the afferent loop after traversing the cystic duct via a transcholecystic approach. The patients were discharged without additional surgical treatment 2 weeks and 1 month after drainage. 
		                        		
		                        		
		                        		
		                        	
2.Transcholecystic Duodenal Drainage as an Alternative Decompression Method for Afferent Loop Syndrome: Two Case Reports
Jihoon HONG ; Gab Chul KIM ; Jung Guen CHA ; Jongmin PARK ; Byunggeon PARK ; Seo Young PARK ; Sang Un KIM
Journal of the Korean Society of Radiology 2024;85(3):661-667
		                        		
		                        			
		                        			 Afferent loop syndrome (ALS) is a rare complication of gastrectomies and gastrointestinal reconstruction. This can predispose patients to fatal conditions, such as cholangitis, pancreatitis, and duodenal perforation with peritonitis. Therefore, emergency decompression is necessary to prevent these complications. Herein, we report two cases in which transcholecystic duodenal drainage, an alternative decompression treatment, was performed in ALS patients without bile duct dilatation. Two patients who underwent distal gastrectomy with Billroth II anastomosis sought consultation in an emergency department for epigastric pain and vomiting. On CT, ALS with acute pancreatitis was diagnosed. However, biliary access could not be achieved because of the absence of bile duct dilatation. To overcome this problem, a duodenal drainage catheter was placed to decompress the afferent loop after traversing the cystic duct via a transcholecystic approach. The patients were discharged without additional surgical treatment 2 weeks and 1 month after drainage. 
		                        		
		                        		
		                        		
		                        	
3.Transcholecystic Duodenal Drainage as an Alternative Decompression Method for Afferent Loop Syndrome: Two Case Reports
Jihoon HONG ; Gab Chul KIM ; Jung Guen CHA ; Jongmin PARK ; Byunggeon PARK ; Seo Young PARK ; Sang Un KIM
Journal of the Korean Society of Radiology 2024;85(3):661-667
		                        		
		                        			
		                        			 Afferent loop syndrome (ALS) is a rare complication of gastrectomies and gastrointestinal reconstruction. This can predispose patients to fatal conditions, such as cholangitis, pancreatitis, and duodenal perforation with peritonitis. Therefore, emergency decompression is necessary to prevent these complications. Herein, we report two cases in which transcholecystic duodenal drainage, an alternative decompression treatment, was performed in ALS patients without bile duct dilatation. Two patients who underwent distal gastrectomy with Billroth II anastomosis sought consultation in an emergency department for epigastric pain and vomiting. On CT, ALS with acute pancreatitis was diagnosed. However, biliary access could not be achieved because of the absence of bile duct dilatation. To overcome this problem, a duodenal drainage catheter was placed to decompress the afferent loop after traversing the cystic duct via a transcholecystic approach. The patients were discharged without additional surgical treatment 2 weeks and 1 month after drainage. 
		                        		
		                        		
		                        		
		                        	
4.Increased Risk of Incident Chronic Obstructive Pulmonary Disease and Related Hospitalizations in Tuberculosis Survivors: A PopulationBased Matched Cohort Study
Taehee KIM ; Hayoung CHOI ; Sang Hyuk KIM ; Bumhee YANG ; Kyungdo HAN ; Jin-Hyung JUNG ; Bo-Guen KIM ; Dong Won PARK ; Ji Yong MOON ; Sang-Heon KIM ; Tae-Hyung KIM ; Ho Joo YOON ; Dong Wook SHIN ; Hyun LEE
Journal of Korean Medical Science 2024;39(11):e105-
		                        		
		                        			 Background:
		                        			Tuberculosis (TB) survivors have an increased risk of developing chronic obstructive pulmonary disease (COPD). This study assessed the risk of COPD development and COPD-related hospitalization in TB survivors compared to controls. 
		                        		
		                        			Methods:
		                        			We conducted a population-based cohort study of TB survivors and 1:1 age- and sex-matched controls using data from the Korean National Health Insurance Service database collected from 2010 to 2017. We compared the risk of COPD development and COPD-related hospitalization between TB survivors and controls. 
		                        		
		                        			Results:
		                        			Of the subjects, 9.6% developed COPD, and 2.8% experienced COPD-related hospitalization. TB survivors had significantly higher COPD incidence rates (36.7/1,000 vs. 18.8/1,000 person-years, P < 0.001) and COPD-related hospitalization (10.7/1,000 vs.4.3/1,000 person-years, P < 0.001) than controls. Multivariable Cox regression analyses revealed higher risks of COPD development (adjusted hazard ratio [aHR], 1.63; 95% confidence interval [CI], 1.54–1.73) and COPD-related hospitalization (aHR, 2.03; 95% CI, 1.81–2.27) in TB survivors. Among those who developed COPD, the hospitalization rate was higher in individuals with post-TB COPD compared to those with non-TB COPD (10.7/1,000 vs. 4.9/1,000 person-years, P < 0.001), showing an increased risk of COPD-related hospitalization (aHR, 1.84; 95% CI, 1.17–2.92). 
		                        		
		                        			Conclusion
		                        			TB survivors had higher risks of incident COPD and COPD-related hospitalization compared to controls. These results suggest that previous TB is an important COPD etiology associated with COPD-related hospitalization. 
		                        		
		                        		
		                        		
		                        	
5.Nitrosylation of b2-Tubulin Promotes Microtubule Disassembly and Differentiated Cardiomyocyte Beating in Ischemic Mice
Da Hyeon CHOI ; Seong Ki KANG ; Kyeong Eun LEE ; Jongsun JUNG ; Eun Ju KIM ; Won-Ho KIM ; Young-Guen KWON ; Kwang Pyo KIM ; Inho JO ; Yoon Shin PARK ; Sang Ick PARK
Tissue Engineering and Regenerative Medicine 2023;20(6):921-937
		                        		
		                        			 BACKGROUND:
		                        			Beating cardiomyocyte regeneration therapies have revealed as alternative therapeutics for heart transplantation. Nonetheless, the importance of nitric oxide (NO) in cardiomyocyte regeneration has been widely suggested, little has been reported concerning endogenous NO during cardiomyocyte differentiation. 
		                        		
		                        			METHODS:
		                        			Here, we used P19CL6 cells and a Myocardiac infarction (MI) model to confirm NO-induced protein modification and its role in cardiac beating. Two tyrosine (Tyr) residues of b2-tubulin (Y106 and Y340) underwent nitrosylation (Tyr-NO) by endogenously generated NO during cardiomyocyte differentiation from pre-cardiomyocyte-like P19CL6 cells. 
		                        		
		                        			RESULTS:
		                        			Tyr-NO-b2-tubulin mediated the interaction with Stathmin, which promotes microtubule disassembly, and was prominently observed in spontaneously beating cell clusters and mouse embryonic heart (E11.5d). In myocardial infarction mice, Tyr-NO-b2-tubulin in transplanted cells was closely related with cardiac troponin-T expression with their functional recovery, reduced infarct size and thickened left ventricular wall. 
		                        		
		                        			CONCLUSION
		                        			This is the first discovery of a new target molecule of NO, b2-tubulin, that can promote normal cardiac beating and cardiomyocyte regeneration. Taken together, we suggest therapeutic potential of Tyr-NO-b2-tubulin, for ischemic cardiomyocyte, which can reduce unexpected side effect of stem cell transplantation, arrhythmogenesis. 
		                        		
		                        		
		                        		
		                        	
6.Feasibility of Single-Shot Whole Thoracic Time-Resolved MR Angiography to Evaluate Patients with Multiple Pulmonary Arteriovenous Malformations
Jihoon HONG ; Sang Yub LEE ; Jae-Kwang LIM ; Jongmin LEE ; Jongmin PARK ; Jung Guen CHA ; Hui Joong LEE ; Donghyeon KIM
Korean Journal of Radiology 2022;23(8):794-802
		                        		
		                        			 Objective:
		                        			To evaluate the feasibility of single-shot whole thoracic time-resolved MR angiography (TR-MRA) to identify the feeding arteries of pulmonary arteriovenous malformations (PAVMs) and reperfusion of the lesion after embolization in patients with multiple PAVMs.  
		                        		
		                        			Materials and Methods:
		                        			Nine patients (8 females and 1 male; age range, 23–65 years) with a total of 62 PAVMs who underwent percutaneous embolization for multiple PAVMs and were subsequently followed up using TR-MRA and CT obtained within 6 months from each other were retrospectively reviewed. All imaging analyses were performed by two independent readers blinded to clinical information. The visibility of the feeding arteries on maximum intensity projection (MIP) reconstruction and multiplanar reconstruction (MPR) TR-MRA images was evaluated by comparing them to CT as a reference. The accuracy of TR-MRA for diagnosing reperfusion of the PAVM after embolization was assessed in a subgroup with angiographic confirmation. The reliability between the readers in interpreting the TR-MRA results was analyzed using kappa (κ) statistics. 
		                        		
		                        			Results:
		                        			Feeding arteries were visible on the original MIP images of TR-MRA in 82.3% (51/62) and 85.5% (53/62) of readers 1 and 2, respectively. Using the MPR, the rates increased to 93.5% (58/62) and 95.2% (59/62), respectively (κ = 0.760 and 0.792, respectively). Factors for invisibility were the course of feeding arteries in the anteroposterior plane, proximity to large enhancing vessels, adjacency to the chest wall, pulsation of the heart, and small feeding arteries. Thirty-seven PAVMs in five patients had angiographic confirmation of reperfusion status after embolization (32 occlusions and 5 reperfusions).TR-MRA showed 100% (5/5) sensitivity and 100% (32/32, including three cases in which the feeding arteries were not visible on TR-MRA) specificity for both readers. 
		                        		
		                        			Conclusion
		                        			Single-shot whole thoracic TR-MRA with MPR showed good visibility of the feeding arteries of PAVMs and high accuracy in diagnosing reperfusion after embolization. Single-shot whole thoracic TR-MRA may be a feasible method for the follow-up of patients with multiple PAVMs. 
		                        		
		                        		
		                        		
		                        	
7.Transpedal lymphatic embolization for lymphorrhea at the graft harvest site after coronary artery bypass grafting
Jung Guen CHA ; Sang Yub LEE ; Jihoon HONG ; Hun Kyu RYEOM ; Gab Chul KIM ; Young Woo DO
Yeungnam University Journal of Medicine 2021;38(1):74-77
		                        		
		                        			
		                        			 Lymphorrhea is a rare but potentially severe complication that occurs after various surgical procedures. Untreated lymphorrhea may lead to wound dehiscence, infection, and prolonged hospital stay. Currently, there is no standard effective treatment. Early management usually includes leg elevation, drainage, and pressure dressing. However, these methods are associated with prolonged recovery and high recurrence rates. We report a case of lymphorrhea from a calf wound after endoscopic great saphenous vein (GSV) harvesting for coronary artery bypass grafting (CABG). The patient presented with intractable oozing from the postoperative wound on the right calf. Lymphorrhea perGsisted for 6 weeks despite negative-pressure wound therapy with a long-acting somatostatin. We performed unilateral pedal lymphangiography that confirmed wound lymphorrhea, followed by glue embolization. No recurrence was observed after 8 months of follow-up. This case report demonstrates the successful use of lymphangiography with glue embolization in the control of lymphorrhea after GSV harvesting for CABG. 
		                        		
		                        		
		                        		
		                        	
8.Decompressive Sacral Foraminotomy for Nerve Root Injury during Conservative Treatment of Sacral Fracture: A Case Report.
Jung Gil LEE ; Jae Hyuk SHIN ; Kwon KIM ; Sang Min CHOI ; Moon Soo PARK ; Ho Guen CHANG
Journal of the Korean Fracture Society 2017;30(1):24-28
		                        		
		                        			
		                        			A 35-year-old woman visited the emergency department for a pedestrian traffic accident. Severe tenderness was noted at the posterior sacrum area, without open wound or initial neurologic deficit. Fracture of the left sacral ala extended to the S1 foramen, anterior acetabulum, and pubic ramus. Two weeks after the injury, she presented aggravating radiculopathy with the weakness of the left great toe plantar flexion. The S1 nerve root was compressed by the fracture fragments in the left S1 foramen. Decompressive S1 foraminotomy was performed. The postoperative follow-up computed tomography scan showed successful decompression of the encroachment, and the patient recovered well from the radiculopathy with motor weakness. She was able to resume her daily routine activity. We suggest that early decompressive sacral foraminotomy could be a useful additional procedure in selective sacral zone II fractures that are accompanied by radiculopathy with a motor deficit.
		                        		
		                        		
		                        		
		                        			Accidents, Traffic
		                        			;
		                        		
		                        			Acetabulum
		                        			;
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Decompression
		                        			;
		                        		
		                        			Emergency Service, Hospital
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Foraminotomy*
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Neurologic Manifestations
		                        			;
		                        		
		                        			Radiculopathy
		                        			;
		                        		
		                        			Sacrum
		                        			;
		                        		
		                        			Toes
		                        			;
		                        		
		                        			Wounds and Injuries
		                        			
		                        		
		                        	
9.Decompressive Sacral Foraminotomy for Nerve Root Injury during Conservative Treatment of Sacral Fracture: A Case Report.
Jung Gil LEE ; Jae Hyuk SHIN ; Kwon KIM ; Sang Min CHOI ; Moon Soo PARK ; Ho Guen CHANG
Journal of the Korean Fracture Society 2017;30(1):24-28
		                        		
		                        			
		                        			A 35-year-old woman visited the emergency department for a pedestrian traffic accident. Severe tenderness was noted at the posterior sacrum area, without open wound or initial neurologic deficit. Fracture of the left sacral ala extended to the S1 foramen, anterior acetabulum, and pubic ramus. Two weeks after the injury, she presented aggravating radiculopathy with the weakness of the left great toe plantar flexion. The S1 nerve root was compressed by the fracture fragments in the left S1 foramen. Decompressive S1 foraminotomy was performed. The postoperative follow-up computed tomography scan showed successful decompression of the encroachment, and the patient recovered well from the radiculopathy with motor weakness. She was able to resume her daily routine activity. We suggest that early decompressive sacral foraminotomy could be a useful additional procedure in selective sacral zone II fractures that are accompanied by radiculopathy with a motor deficit.
		                        		
		                        		
		                        		
		                        			Accidents, Traffic
		                        			;
		                        		
		                        			Acetabulum
		                        			;
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Decompression
		                        			;
		                        		
		                        			Emergency Service, Hospital
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Foraminotomy*
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Neurologic Manifestations
		                        			;
		                        		
		                        			Radiculopathy
		                        			;
		                        		
		                        			Sacrum
		                        			;
		                        		
		                        			Toes
		                        			;
		                        		
		                        			Wounds and Injuries
		                        			
		                        		
		                        	
10.The Association of Blood Concentrations of Healvy Metals and Blood Pressure in Residents Living Near Janghang Copper Smelter in Korea.
Sang Yong EOM ; Dong Hyuk YIM ; Sun In MOON ; Bolormaa OCHIRPUREV ; Young Sook CHOI ; Choong Hee PARK ; Guen Bae KIM ; Seung Do YU ; Byung Sun CHOI ; Jung Duck PARK ; Yong Dae KIM ; Heon KIM
Journal of Agricultural Medicine & Community Health 2017;42(1):13-23
		                        		
		                        			
		                        			OBJECTIVES: This study was conducted to evaluate a relationship between the blood concentrations of toxic metals and the blood pressure in people living near the copper smelter. METHODS: The study included 570 adults living within 4km of the smelter. We compared systolic and diastolic blood pressure between tertiary groups for blood cadmium, mercury and lead levels, respectively. Multiple regression analysis was performed to identify risk factors affecting systolic and diastolic blood pressures. RESULTS: In male subjects, there is a significant difference in the mean of systolic and diastolic blood pressure between tertiary groups of blood cadmium and mercury levels, but in women, there was no significant difference in the mean systolic and diastolic blood pressures in all tertiary groups of heavy metals. The results of multiple regression analysis showed that age, BMI, and cadmium concentration in men were risk factors for blood pressure. CONCLUSIONS: Residents living near the Janghang smelter showed high concentrations of blood lead and cadmium, suggesting that they were exposed to high concentrations of heavy metals released from the smelter in the past. Such exposure may have caused some blood pressure increase. Especially, the concentration of cadmium in the case of men and the concentration of mercury in blood in the case of women were found to be significantly related to the increase of blood pressure. The local population should be advised to make efforts to reduce exposure to environmental contaminants, in order to minimize cardiovascular disease, and to pay close attention to any health problems possibly related to toxic metal exposure.
		                        		
		                        		
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Blood Pressure*
		                        			;
		                        		
		                        			Cadmium
		                        			;
		                        		
		                        			Cardiovascular Diseases
		                        			;
		                        		
		                        			Copper*
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Korea*
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Metals*
		                        			;
		                        		
		                        			Metals, Heavy
		                        			;
		                        		
		                        			Risk Factors
		                        			
		                        		
		                        	
            
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