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| 1 | Recurrence after endoscopic piecemeal mucosal resection for large sessile colorectal polyps显示文摘AIM: To evaluate the safety and outcomes of endoscopic piecemeal mucosal resection (EPMR) for large sessile colorectal polyps. METHODS: The patients enrolled in this study were 47 patients with 50 large sessile polyps (diameter, 2 cm or greater) who underwent EPMR using a submucosal saline injection technique between December 2002 and October 2005. All medical records, including characteristics of the patients and polyps, complications, and recurrences, were retrospectively reviewed. The first follow-up endoscopic examination was performed at 3-6 mo after initial endoscopic resection, and the second at 12 mo postEPMR. Subsequent surveillance colonoscopic examinations were individualized, taking risk factors into account. RESULTS: The patients were 23 men and 24 women,with a mean age of 60 years. Mean polyp size was 30.1 mm. Of 50 polyps identified, 34 (68%) were benign and 16 (32%) were malignant. There were 6 (12%) cases with EPMR-related bleeding: 5 intra-procedural and 1 early post-procedural bleeding. All bleeding episodes were managed by endoscopic clipping or argon beam coagulation. There were no perforations. Recurrence was identified in 5 cases (12.2%): 4 local recurrences detected at 3 mo post-EPMR and 1 local recurrence detected at 14 mo post-EPMR. The recurrence rate after EPMR was 3.1% for benign polyps and 33.3% for malignant polyps (P < 0.05). Median follow-up time was 37 mo. CONCLUSION: EPMR is safe, but should be applied carefully in malignant polyps. Close follow-up endoscopic examinations are necessary for early detection of recurrence. | Guh Jung Seo Dae Kyung Sohn Kyung Su Han Chang Won Hong Byung Chang Kim Ji Won Park Hyo Seong Choi Hee Jin Chang Jae Hwan Oh | 2010 | World Journal of Gastroenterology2010，16，22： | 17 |
| 2 | Highly flexible and transparent conducting silver nanowire/ZnO composite film for organic solar cells显示文摘 | Myungkwan Song Jong Hyun Park Chang Su Kim Dong-Ho Kim Yong-Cheol Kang Sung-Ho Jin Won-Yong Jin Jae-Wook Kang | 2014 | Nano Research2014，7，9： | 9 |
| 3 | Timing of upper gastrointestinal endoscopy does not influence short-term outcomes in patients with acute variceal bleeding显示文摘AIM To examine the association between the timing of endoscopy and the short-term outcomes of acute variceal bleeding in cirrhotic patients.METHODS This retrospective study included 274 consecutive patients admitted with acute esophageal variceal bleeding of two tertiary hospitals in Korea. We adjusted confounding factors using the Cox proportional hazards model and the inverse probability weighting(IPW) method. The primary outcome was the mortality of patients within 6 wk.RESULTS A total of 173 patients received urgent endoscopy(i.e., ≤ 12 h after admission), and 101 patients received nonurgent endoscopy(> 12 h after admission). The 6-wk mortality rate was 22.5% in the urgent endoscopy group and 29.7% in the non-urgent endoscopy group, and there was no significant difference between the two groups before(P = 0.266) and after IPW(P = 0.639). The length of hospital stay was statistically different between the urgent group and non-urgent group(P = 0.033); however, there was no significant difference in the inhospital mortality rate between the two groups(8.1% vs 7.9%, P = 0.960). In multivariate analyses, timing of endoscopy was not associated with 6-wk mortality(hazard ratio, 1.297; 95% confidence interval, 0.806-2.089; P = 0.284).CONCLUSION In cirrhotic patients with acute variceal bleeding, the timing of endoscopy may be independent of short-term mortality. | Jeong-Ju Yoo Young Chang Eun Ju Cho Ji Eun Moon Sang Gyune Kim Young Seok Kim Yun Bin Lee Jeong-Hoon Lee Su Jong Yu Yoon Jun Kim Jung-Hwan Yoon | 2018 | World Journal of Gastroenterology2018，24，44： | 8 |
| 4 | Totally laparoscopic total gastrectomy using the modified overlap method and conventional open total gastrectomy:A comparative study显示文摘BACKGROUND Although several methods of totally laparoscopic total gastrectomy(TLTG)have been reported.The best anastomosis technique for LTG has not been established.AIM To investigate the effectiveness and surgical outcomes of TLTG using the modified overlap method compared with open total gastrectomy(OTG)using the circular stapled method.METHODS We performed 151 and 131 surgeries using TLTG with the modified overlap method and OTG for gastric cancer between March 2012 and December 2018.Surgical and oncological outcomes were compared between groups using propensity score matching.In addition,we analyzed the risk factors associated with postoperative complications.RESULTS Patients who underwent TLTG were discharged earlier than those who underwent OTG[TLTG(9.62±5.32)vs OTG(13.51±10.67),P<0.05].Time to first flatus and soft diet were significantly shorter in TLTG group.The pain scores at all postoperative periods and administration of opioids were significantly lower in the TLTG group than in the OTG group.No significant difference in early,late and esophagojejunostomy(EJ)-related complications or 5-year recurrence free and overall survival between groups.Multivariate analysis demonstrated that body mass index[odds ratio(OR),1.824;95%confidence interval(CI):1.029-3.234,P=0.040]and American Society of Anaesthesiologists(ASA)score(OR,3.154;95%CI:1.084-9.174,P=0.035)were independent risk factors of early complications.Additionally,age was associated with≥3 Clavien-Dindo classification and EJrelated complications.CONCLUSION Although TLTG with the modified overlap method showed similar complication rate and oncological outcome with OTG,it yields lower pain score,earlier bowel recovery,and discharge.Surgeons should perform total gastrectomy cautiously and delicately in patients with obesity,high ASA scores,and older ages. | Chang Seok Ko Nam Ryong Choi Byung Sik Kim Jeong Hwan Yook Min-Ju Kim Beom Su Kim | 2021 | World Journal of Gastroenterology2021，27，18： | 8 |
| 5 | Efficacy of cap-assisted colonoscopy according to lesion location and endoscopist training level显示文摘AIM: To evaluate the efficacy of cap-assisted colonoscopy(CAC) for detection of colorectal polyps and adenomas according to the lesion location and endoscopist training level.METHODS: Patients 20 years or older, who underwent their first screening colonoscopy in a single tertiary center from May 2011 to December 2012 were enrolled in this study. All patients underwent either CAC or standard colonoscopy(SC), and all of the procedures were performed by 11 endoscopists(8 trainees and 3 experts). All procedures were performed with highdefinition colonoscopes and narrow band imaging. The eight trainees had experiences of performing 150 to 500 colonoscopies, and the three experts had experiences of performing more than 3000 colonoscopies. A 4-mmlong transparent cap was attached to the end of a colonoscope in the CAC group. We retrospectively evaluated the number of polyps and adenomas, polyp detection rate(PDR), and the number of adenomas and adenoma detection rate(ADR) according to the lesion location and endoscopist training level between CAC and SC. We also evaluated the number of polyps and adenomas according to their size between CAC and SC.RESULTS: Overall, PDR and ADR using CAC were significantly higher than those using SC for both whole colon(48.5% vs 40.7%, P = 0.012; 35.7% vs 28.3%, P = 0.012) and right-side colon(35.3% vs 26.6%, P = 0.002; 27.0% vs 16.9%, P < 0.001). The number of polyps and adenomas per patient using CAC was significantly higher than that using SC for both the whole colon(1.07 ± 1.59 vs 0.82 ± 1.31, P = 0.008; 0.72 ± 1.32 vs 0.50 ± 1.01, P = 0.003) and right-side colon(0.66 ± 1.18 vs 0.41 ± 0.83, P < 0.001; 0.46 ± 0.97 vs 0.25 ± 0.67, P < 0.001). In the trainee group, the PDR and ADR using CAC were significantly higher than those using SC for both the whole colon(46.7% vs 39.7%, P = 0.040; 33.9% vs 26.0%, P =0.012) and right-side colon(34.2% vs 26.5%, P = 0.015; 25.3% vs 15.9%, P = 0.001). In the expert group, the PDR and ADR using CAC were significantly higher than those using SC only for the right-side colon(42.1% vs 27.0%, P =0.035; 36.8% vs 21.0%, P = 0.020).CONCLUSION: CAC is more effective than SC for detection of colorectal polyps and adenomas, especially when performed by trainees and when the lesions are located in the right-side colon. | Dong Jun Kim Hyung Wook Kim Su Bum Park Dae Hwan Kang Cheol Woong Choi Joung Boom Hong Byoung Hoon Ji Chang Seok Lee | 2015 | World Journal of Gastroenterology2015，21，20： | 8 |
| 6 | Clinical and endoscopic characteristics of drug-induced esophagitis显示文摘AIM: To investigate clinical, endoscopic and pathological characteristics of drug-induced esophagitis.METHODS: Data for patients diagnosed with drug-induced esophagitis from April 2002 to May 2013 was reviewed. Patients diagnosed with malignancy, viral or fungal esophagitis were excluded. Clinical, endoscopic and pathological characteristics of patients diagnosed with drug-induced esophagitis were analyzed.RESULTS: Seventy-eight patients were diagnosed with drug-induced esophagitis. Their mean age was 43.9 ± 18.9 years and 35.9% were male. Common symptoms were chest pain(71.8%), odynophagia(38.5%) and dysphagia(29.5%). The endoscopic location was in the middle third of esophagus in 78.2%. Endoscopic findings were ulcer(82.1%), erosion(17.9%), ulcer with bleeding(24.4%), coating with drug material(5.1%), impacted pill fragments(3.8%) and stricture(2.6%). Kissing ulcers were observed in 43.6%. The main causative agents were antibiotics and non-steroidal antiinflammatory drugs. All the patients were treated with proton pump inhibitors(PPIs) or sucralfate, and the causative drugs were discontinued. Nineteen patients with drug-induced esophagitis were followed up with endoscopy and revealed normal findings, scars or healing ulcers.CONCLUSION: Drug-induced esophagitis mainly presents as chest pain, odynophagia and dysphagia, and may be successfully treated with PPIs and discontinuation of the causative drug. Kissing ulcers were observed in 43.6%. | Su Hwan Kim Ji Bong Jeong Ji Won Kim Seong-Joon Koh Byeong Gwan Kim Kook Lae Lee Mee Soo Chang Jong Pil Im Hyoun Woo Kang Cheol Min Shin | 2014 | World Journal of Gastroenterology2014，20，31： | 7 |
| 7 | Prevalence of upper gastrointestinal bleeding risk factors among the general population and osteoarthritis patients显示文摘AIM To assess the prevalence of possible risk factors of upper gastrointestinal bleeding(UGIB) and their agegroup specific trend among the general population and osteoarthritis patients.METHODS We utilized data from the National Health InsuranceService that included claims data and results of the national health check-up program. Comorbid conditions(peptic ulcer, diabetes, liver disease, chronic renal failure, and gastroesophageal reflux disease), concomitant drugs(aspirin, clopidogrel, cilostazol, non-steroidal anti-inflammatory drugs, steroid, anticoagulants, and SSRI), personal habits(smoking, and alcohol consumption) were considered as possible UGIB risk factors. We randomly imputed the prevalence of infection in the data considering the age-specific prevalence of Helicobacter pylori(H. pylori) infection in Korea. The prevalence of various UGIB risk factors and the age-group specific trend of the prevalence were identified. Prevalence was compared between osteoarthritis patients and others.RESULTS A total of 801926 subjects(93855 osteoarthritis patients) aged 20 and above were included. The prevalence of individual and concurrent multiple risk factors became higher as the age increased. The prevalence of each comorbid condition and concomitant drug were higher in osteoarthritis patients. Thirty-five point zero two percent of the overall population and 68.50% of osteoarthritis patients had at least one or more risk factors of UGIB. The prevalence of individual and concurrent multiple risk factors in younger age groups were also substantial. Furthermore, when personal habits(smoking, and alcohol consumption) and H. pylori infection were included, the prevalence of concurrent multiple risk factors increased greatly even in younger age groups.CONCLUSION Prevalence of UGIB risk factors was high in elderly population, but was also considerable in younger population. Patient with osteoarthritis was at higher UGIB risk than those without osteoarthritis. Physicians s h o u ld c o n s id e r in d i v i d u a li z e d r i s k a s s e s s m e n t regardless of age when prescribing drugs or performing procedures that may increase the risk of UGIB, and take necessary measures to reduce modifiable risk factors such as H. pylori eradication or lifestyle counseling. | Sang Hyuck Kim Jae Moon Yun Chong Bum Chang Heng Piao Su Jong Yu Dong Wook Shin | 2016 | World Journal of Gastroenterology2016，22，48： | 6 |
| 8 | A case of ascending colon variceal bleeding treated with venous coil embolization显示文摘A 38-year-old female with a history of alcoholic liver cirrhosis visited our hospital with a massive hematochezia.An esophagogastroduodenoscopy did not demonstrate any bleeding source,and a colonoscopy showed a massive hemorrhage in the ascending colon but without an obvious focus.The source of the bleeding could not be found with a mesenteric artery angiography.We performed an enhanced abdominal computed tomography,which revealed a distal ascending colonic varix,and assumed that the varix was the source of the bleeding.We performed a venous coil embolization and histoacryl injection to obliterate the colon varix.The intervention appeared to be successful because the vital signs and hemoglobin laboratory data remained stable and because the hematochezia was no longer observed.We report here on a rare case of colonic variceal bleeding that was treated with venous coil embolization. | Bong Suk Ko Woo Tae Kim Su Sun Chang Eun Hye Kim Seung Woo Lee Won Seok Park Yeon Soo Kim Soon Woo Nam Dong Soo Lee Ji Chang Kim Sang Bum Kang | 2013 | World Journal of Gastroenterology2013，19，2： | 4 |
| 9 | Enhanced efficiency in lead-free bismuth iodide with post treatment based on a hole-conductor-free perovskite solar cell显示文摘Despite the excellent merits of lead perovskite solar cells,their instability and toxicity still present a bottleneck for practical applications.Bismuth perovskite has emerged as a candidate for photovoltaic (PV) applications,because it not only has a low toxicity but is also stable in air.However,the power conversion efficiency (PCE) remains an unsolved problem.We performed band gap tuning experiments to improve the efficiency.The absorption of ABi3I10 structure films was extended within the visible region,and the optical band gap was decreased considerably compared to that for Cs3Bi2I9.Furthermore,we explained the correlation between the structure and the optical properties via a first-principles study.A device employing CsBi3I10 as a photoactive layer exhibits a PCE of 1.51% and an excellent ambient stability over 30 days. | Jongmoon Shin Maengsuk Kim Sujeong Jung Chang Su Kim Jucheol Park Aeran Song Kwun-Bum Chung Sung-Ho Jin Jun Hee Lee Myungkwan Song | 2018 | Nano Research2018，11，12： | 4 |
| 10 | Nitric oxide synthase 2 gene polymorphisms are associated with prostatic volume in Korean men with benign prostatic hyperplasia显示文摘良性的 prostatic 增生(BPH ) 的精确原因论仍然保持不清楚;然而,它被知道煽动性的过程有的那免疫学的在 BPH 开始和前进的致病的一个角色。氮的氧化物 synthase 2 (NOS2 ) 可诱导的表示密切与 prostatic 疾病被相关,包括前列腺癌症和 BPH。这研究的目的是调查在 NOS2 多型性和 BPH 之间的关系。与 205 控制和 229 个 BPH 题目的一个队,我们 genotyped 在 NOS2 基因的三单个核苷酸多型性( SNP ),包括 rs2779248 (倡导者,? 278 T/C ), rs10459953 ( 5 鈥? untranslated 区域)和 rs2297518 ( exon 16 ,错误感觉, Ser608Leu ),用直接定序和限制碎片长度多型性。在控制和 BPH 题目之间的 genotypic 和突变而产生之遗传的频率被比较,并且在 BPH 题目之中的协会被分析。SNPStats, SNPAnalyzer 和 HelixTree 计划被用来分析 SNP。在控制和 BPH 题目之间的 SNP 上没有协会。当 BPH 题目被分析时,在低、高的前列腺特定的抗原组之间的 SNP 上没有协会。然而,一 SNP (rs10459953,机会比率[或]= 0.44, 95% 信心间隔[CI ]= 0.29 鈥 ?.65, P < 0.0001,在 codominant 当模特儿;或 = 0.23, 95% CI = 0.12 鈥 ?.46, P < 0.0001,在里面主导的模型;并且或 = 0.46, 95% CI = 0.24 鈥 ?.86, P = 0.015,在后退的模型) 在 BPH 与 prostatic 体积被联系。我们在 BPH 与小、大的 prostatic 体积在在题目之间的 NOS2 SNP (rs10459953 ) 的遗传型频率检测了一个强壮的协会。结果建议 NOS2 可以在 BPH 与 prostatic 体积被联系。 | Koo Han Yoo Su Kang Kim Joo-Ho Chung Sung-Goo Chang | 2010 | Asian Journal of Andrology2010，12，5： | 3 |
| 11 | Experimental and numerical analysis of spray-atomization characteristics of biodiesel fuel in various fuel and ambient temperatures conditions显示文摘 | Su Han Park Hyung Jun Kim Hyun Kyu Suh Chang Sik Lee | 2009 | International Journal of Heat and Fluid Flow2009，，5： | 3 |
| 12 | Predictors for difficult cecal insertion in colonoscopy: The impact of obesity indices显示文摘AIM To identify the factors influencing cecal insertion time(CIT) and to evaluate the effect of obesity indices on CIT. METHODS We retrospectively reviewed the data for participants who received both colonoscopy and abdominal computed tomography(CT) from February 2008 to May 2008 as part of a comprehensive health screening program. Age, gender, obesity indices [body mass index(BMI), waist-to-hip circumference ratio(WHR), waist circumference(WC), visceral adipose tissue(VAT)volume and subcutaneous adipose tissue(SAT) volume on abdominal CT], history of prior abdominal surgery, constipation, experience of the colonoscopist, quality of bowel preparation, diverticulosis and time required to reach the cecum were analyzed. CIT was categorized as longer than 10 min(prolonged CIT) and shorter than or equal to 10 min, and then the factors that required a CIT longer than 10 min were examined.RESULTS A total of 1678 participants were enrolled. The mean age was 50.42 ± 9.931 years and 60.3% were men. The mean BMI, WHR, WC, VAT volume and SAT volume were 23.92 ± 2.964 kg/m2, 0.90 ± 0.076, 86.95 ± 8.030 cm, 905.29 ± 475.220 cm3 and 1707.72 ± 576.550 cm3, respectively. The number of patients who underwent abdominal surgery was 268(16.0%). Colonoscopy was performed by an attending physician alone in 61.9% of cases and with the involvement of a fellow in 38.1% of cases. The median CIT was 7 min(range 2-56 min, IQR 5-10 min), and mean CIT was 8.58 ± 5.291 min. Being female, BMI, VAT volume and involvement of fellow were significantly associated with a prolonged CIT in univariable analysis. In multivariable analysis, being female(OR = 1.29, P = 0.047), lower BMI(< 23 kg/m2)(OR = 1.62, P = 0.004) or higher BMI(≥ 25 kg/m2)(OR = 1.80, P < 0.001), low VAT volume(< 500 cm3)(OR = 1.50, P = 0.013) and fellow involvement(OR = 1.73, P < 0.001) were significant predictors of prolonged CIT. In subgroup analyses for gender, lower BMI or higher BMI and fellow involvement were predictors for prolonged CIT in both genders. However, low VAT volume was associated with prolonged CIT in only women(OR = 1.54, P = 0.034).CONCLUSION Being female, having a lower or higher BMI than the normal range, a low VAT volume, and fellow involvement were predictors of a longer CIT. | Soo Yun Moon Byung Chang Kim Dae Kyung Sohn Kyung Su Han Bun Kim Chang Won Hong Bum Joon Park Kum Hei Ryu Ji Hyung Nam | 2017 | World Journal of Gastroenterology2017，23，13： | 3 |
| 13 | Endoscopic resection of duodenal neoplasms: a single-center study显示文摘 | Jong Won Sohn Seong Woo Jeon Chang Min Cho Min Kyu Jung Sung Kook Kim Dong Seok Lee Hyuk Su Son In Kwon Chung | 2010 | Surgical Endoscopy2010，，12： | 2 |
| 14 | A new bit-serial multiplier over using irreducible trinomials 显示文摘 | Chang Nam Su Kim Tae Hyun Kim Chang Han | 2010 | Computers and Mathematics with Applications2010，60，2： | 1 |
| 15 | Solidification of AZ31 magnesium alloy plate in a horizontal continuous casting process 显示文摘 | Bong Sun You Chang Dong Yim Su Hyeon Kim | 2005 | Material Science and Engineering A2005，，413414： | 1 |
| 16 | Effects of trimetazidine in patients with acute myocardial infarction: data from the Korean Acute Myocardial Infarction Registry显示文摘 | Jeong Su Kim Chang Hoon Kim Kook Jin Chun June Hong Kim Yong Hyun Park Jun Kim Jin Hee Choi Sang Hyun Lee Eun Jung Kim Dae Gon Yu Eun Young Ahn Myung Ho Jeong | 2013 | Clinical Research in Cardiology2013，，： | 1 |
| 17 | Macro- scopic spray characteristics and breakup performance of d/methyl ether(DME) fuel at high fuel temperatures and ambient conditions显示文摘 | Su Han Park Hyung Jun Kim Chang Sik Lee | 2010 | Fuel2010，89，10： | 1 |
| 18 | Wear characteristics of carbon-phenolic woven composites mixed with nano-particles 显示文摘 | Park Dong Chang Kim Seong Su Kim Byung Chul | 2006 | Composite Structure2006，74，： | 1 |
| 19 | High-level expression of an antimicrobial peptide histonin as a natural form by multimerization and furin-mediated cleavage显示文摘 | Jung Min Kim Su A Jang Byung Jo Yu Bong Hyun Sung Ju Hyun Cho Sun Chang Kim | 2008 | Applied Microbiology and Biotechnology2008，，1： | 1 |
| 20 | Solidification of AZ31 magnesium alloy plate in a horizontal continuous casting process显示文摘 | Bong Sun You Chang Dong Yim Su Hyeon Kim | 2005 | Materials Science and Engineering A2005，，： | 1 |
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