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| 1 | Endoscopic removal of gastric ectopic pancreas:An initial experience with endoscopic submucosal dissection显示文摘AIM:To evaluate the therapeutic usefulness and safety of endoscopic resection in patients with gastric ectopic pancreas.METHODS:A total of eight patients with ectopic pancreas were included.All of them underwent endoscopic ultrasonography before endoscopic resection.Endo-scopic resection was performed by two methods:endo-scopic mucosal resection(EMR)by the injection-and-cut technique or endoscopic mucosal dissection(ESD).RESULTS:We planned to perform EMR in all eight cases but EMR was successful in only four cases.In the other four cases,saline spread into surrounding normal tissues and the lesions becameattened,which made it impossible to remove them by EMR.Inthose four cases,we performed ESD and removed the lesions without any complications.CONCLUSION:If conventional EMR is difficult to remove gastric ectopic pancreas,ESD is a feasible alternative method for successful removal. | Dong Yup Ryu Gwang Ha Kim Do Youn Park Bong Eun Lee Jae Hoon Cheong Dong Uk Kim Hyun Young Woo Jeong Heo Geun Am Song | 2010 | World Journal of Gastroenterology2010，16，36： | 24 |
| 2 | How good is cola for dissolution of gastric phytobezoars?显示文摘AIM:To evaluate the efficacy of cola treatment for gastric phytobezoars,including diospyrobezoars.METHODS:A total of 17 patients(range:48 to 78 years) with symptomatic gastric phytobezoars treated with cola and adjuvant endoscopic therapy were reviewed.Three liters of cola lavage(10 cases) or drink(7 cases) were initially used,and then endoscopic fragmentation was done for the remnant bezoars by using a lithotripsy basket or a polypectomy snare.The overall success of dissolving a gastric phytobezoars with using three liters of cola and the clinical and endoscopic findings were compared retrospectively between four cases of complete dissolution by using only cola and 13 cases of partial dissolution with cola.RESULTS:After 3 L of cola lavage or drinking,a complete dissolution of bezoars was achieved in four patients(23.5%),while 13 cases(76.5%) were only partially dissolved.Phytobezoars(4 of 6 cases) were observed more frequently than diospyrobezoars(0 of 11) in the group that underwent complete dissolution(P = 0.006).Gender,symptom duration,size of bezoar and method of cola administration were not significantly different between the two groups.Twelve of 13 patients with residual bezoars were completely treated with a combination of cola and endoscopic fragmentation.CONCLUSION:The rate of complete dissolution with three liters of cola was 23.5%,but no case of diospyrobezoar was completely dissolved using this method.However,pretreatment with cola may be helpful and facilitate endoscopic fragmentation of gastric phytobezoars. | Beom Jae Lee Jong-Jae Park Hoon Jai Chun Ji Hoon Kim Jong Eun Yeon Yoon Tae Jeen Jae Seon Kim Kwan Soo Byun Sang Woo Lee Jae Hyun Choi Chang Duck Kim Ho Sang Ryu Young-Tae Bak | 2009 | World Journal of Gastroenterology2009，15，18： | 22 |
| 3 | Treatment strategies using adefovir dipivoxil for individuals with lamivudine-resistant chronic hepatitis B显示文摘AIM:To investigate retrospectively the long-term efficacy of various treatment strategies using adefovir dipivoxil(adefovir) in patients with lamivudine-resistant chronic hepatitis B.METHODS:We included 154 consecutive patients in two treatment groups:the 'add-on' group(n = 79),in which adefovir was added to ongoing lamivudine treatment due to lamivudine resistance,and the 'switch/combination' group(n = 75),in which lamivudine was first switched to adefovir and then re-added later as needed.The 'switch/combination' group was then divided into two subgroups depending on whether participants followed(group A,n = 30) or violated(group B,n = 45) a proposed treatment strategy that determined whether to add lamivudine based on the serum hepatitis B virus(HBV) DNA levels(< 60 IU/mL or not) after 6 mo of treatment(roadmap concept).RESULTS:The cumulative probability of virologic response(HBV DNA < 60 IU/mL) was higher in group A than in the 'add-on' group and in group B(P < 0.001).In contrast,the cumulative probability of virologic breakthrough was lower in the 'add-on' group than in group B(P = 0.002).Furthermore,the risk of virologic breakthrough in the multivariate analysis was significantly lower in the 'add-on' group than in group A(hazard ratio = 0.096;95%CI,0.015-0.629;P = 0.015).CONCLUSION:The selective combination of adefovir with lamivudine based upon early treatment responses increased the odds of virologic breakthrough relative to the use of uniform combination therapy from the beginning of treatment. | Tae Jung Yun Jin Yong Jung Chang Ha Kim Soon Ho Um Hyonggin An Yeon Seok Seo Jin Dong Kim Hyung Joon Yim Bora Keum Yong Sik Kim Yoon Tae Jeen Hong Sik Lee Hoon Jai Chun Chang Duck Kim Ho Sang Ryu | 2012 | World Journal of Gastroenterology2012，18，47： | 19 |
| 4 | Endoscopic submucosal tunnel dissection salvage technique for ulcerative early gastric cancer显示文摘Endoscopic submucosal dissection is an effective treatment modality for early gastric cancer(EGC), though the submucosal fibrosis found in ulcerative EGC is an obstacle for successful treatment. This report presents two cases of ulcerative EGC in two males, 73- and 80-year-old, with severe fibrosis. As endoscopic ultrasonography suggested that the EGCs had invaded the submucosal layer, the endoscopic submucosal tunnel dissection salvage technique was utilized for complete resection of the lesions. Although surgical gastrectomy was originally scheduled, the two patients had severe coronary heart disease, and surgeries were refused because of the risks associated with their heart conditions. The endoscopic submucosal tunnel dissection salvage technique procedures described in these cases were performed under conscious sedation, and were completed within 30 min. The complete en bloc resection of EGC using endoscopic submucosal tunnel dissection salvage technique was possible with a free resection margin, and no other complications were noted during the procedure. This is the first known report concerning the use of the endoscopic submucosal tunnel dissection salvage technique salvage technique for treatment of ulcerative EGC. We demonstrate that endoscopic submucosal tunnel dissection salvage technique it is a feasible method showing several advantages over endoscopic submucosal dissection for cases of EGC with fibrosis. | Hyuk Soon Choi Hoon Jai Chun Min Ho Seo Eun Sun Kim Bora Keum Yeon Seok Seo Yoon Tae Jeen Hong Sik Lee Soon Ho Um Chang Duck Kim Ho Sang Ryu | 2014 | World Journal of Gastroenterology2014，20，27： | 8 |
| 5 | In-situ synthesis of TiC/Fe alloy composites with high strength and hardness by reactive sintering显示文摘Fe alloy composites reinforced with in-situ titanium carbide(Ti C) particles were fabricated by reactive sintering using different reactant C/Ti ratios of 0.8,0.9,1 and 1.1 to investigate the microstructure and mechanical properties of in-situ Ti C/Fe alloy composites.The microstructure showed that the in-situ synthesized Ti C particles were spherical with a size of 1–3 μm,irrespective of C/Ti ratio.The stoichiometry of in-situ Ti C increased from 0.85 to 0.88 with increasing C/Ti ratio from 0.8 to 0.9,but remained almost unchanged for C/Ti ratios between 0.9 and 1.1 due to the same driving force for carbon diffusion in Ti Cxat the common sintering temperature.The in-situ Ti C/Fe alloy composite with C/Ti = 0.9 showed improved mechanical properties compared with other C/Ti ratios because the presence of excess carbon(C/Ti = 1 and 1.1) resulted in unreacted carbon within the Fe alloy matrix,while insufficient carbon(C/Ti = 0.8)caused the depletion of carbon from the Fe alloy matrix,leading to a significant decrease in hardness.This study presents that the maximized hardness and superior strength of in-situ Ti C/Fe alloy composites can be achieved by microstructure control and stoichiometric analysis of the in-situ synthesized Ti C particles,while maintaining the ductility of the composites,compared to those of the unreinforced Fe alloy.Therefore,we anticipate that the in-situ synthesized Ti C/Fe alloy composites with enhanced mechanical properties have great potential in cutting tool,mold and roller material applications. | Junho Lee Dongju Lee Myung Hoon Song Wonhyuk Rhee Ho Jin Ryu Soon Hyung Hong | 2018 | Journal of Materials Science & Technology2018，34，8： | 8 |
| 6 | Comparison of sequential and 7-,10-,14-d triple therapy for Helicobacter pylori infection显示文摘AIM:To compare the effectiveness of sequential therapy for Helicobacter pylori(H.pylori) infection with that of triple therapy of varying durations.METHODS:The 460 patients enrolled in this study had H.pylori-associated gastritis or a gastric or duodenal ulcer.After screening,H.pylori-infected patients were randomly assigned to receive either conventional triple therapy for 7,10 or 14 d,or a new 10-d sequential therapy.Each of the 4 treatment groups included 115 patients.The outcomes of eradication therapy were assessed 4 wk after treatment by the urea breath test and histology.RESULTS:The overall eradication rate was 81.0%,and eradication rates were 75.7% for 7-d conventional triple therapy,81.9% for 10-d conventional triple therapy,84.4% for 14-d conventional triple therapy,and 82.0% for 10-d sequential therapy.Neither intention-to-treat analysis nor per protocol analysis showed significant differences in eradication rates using sequential therapy or the standard triple therapy(P = 0.416 and P = 0.405,respectively).CONCLUSION:There are no significant differences between 10-d sequential eradication therapy for H.pylori and any duration of standard triple treatment in Korean patients. | Hyuk Soon Choi Hoon Jai Chun Sang Hoon Park Bora Keum Yeon Seok Seo Yong Sik Kim Yoon-Tae Jeen Soon Ho Um Hong Sik Lee Chang Duck Kim Ho Sang Ryu | 2012 | World Journal of Gastroenterology2012，18，19： | 7 |
| 7 | Long-term outcomes of endoscopic submucosal dissection for early gastric cancer: a single-center experience显示文摘 | Mun Ki Choi Gwang Ha Kim Do Youn Park Geun Am Song Dong Uk Kim Dong Yup Ryu Bong Eun Lee Jae Hoon Cheong Mong Cho | 2013 | Surgical Endoscopy2013，，11： | 6 |
| 8 | Safety of endoscopic ultrasound-guided ethanol ablation for pancreatic cystic lesions: A single-center experience of 214 patients显示文摘Background:Endoscopic ultrasound-guided ethanol ablation(EUS-EA)for pancreatic cystic lesions(PCLs)has been used in recent years as a feasible treatment modality for low malignant probability PCLs or patients considered high-risk for surgery.The present study aimed to confirm the safety of EUS-EA and to find predictive factors for adverse event(AE).Methods:A retrospective review was performed from the prospectively maintained database of patients who underwent EUS-EA for PCLs from June 2006 to April 2018 at Seoul National University Hospital.The primary outcomes of the study were the rates of AEs and severe AEs by EUS-EA.The secondary outcome was the predictive factors of AEs including acute pancreatitis and abdominal pain.Results:A total of 214 patients were evaluated and the diagnoses of PCLs according to cystic fluid analysis and clinical features were as follows:serous cystic neoplasm(32.2%),mucinous cystic neoplasm(26.6%),branch duct type intraductal papillary mucinous neoplasm(BD-IPMN)(29.4%),and pseudocyst(11.7%).Three patients(1.4%)experienced severe AEs.Overall,AEs occurred in 71(33.2%)patients.BD-IPMN(OR:2.87;95%CI:1.05–7.84;P=0.040),multilocular cysts(OR:3.59;95%CI:1.09–11.85;P=0.036),suspected ethanol leakage during procedure(OR:10.68;95%CI:1.98–57.53;P=0.006),and sticky cystic fluid(OR:3.83;95%CI:1.20–12.24;P=0.024)were predictive factors for post-procedural acute pancreatitis.PCLs of uncinate process(OR:2.99;95%CI:1.22–7.35;P=0.017)and PCLs with exophytic portion(OR:3.70;95%CI:1.96–7.01;P<0.001)were predictive factors for post-procedural abdominal pain.Conclusions:EUS-EA is a safe procedure with a very low rate of severe AEs.It seems possible to predict the AEs according to the features of the procedure and PCLs. | Jin Ho Choi Sang Hyub Lee Young Hoon Choi Min Su You Bang-Sup Shin Woo Hyun Paik Ji Kon Ryu Yong-Tae Kim | 2019 | Hepatobiliary & Pancreatic Diseases International2019，18，6： | 6 |
| 9 | Preoperative CA 125 is significant indicator of curative resection in gastric cancer patients显示文摘AIM: To investigate the correlation among tumor markers, curative resection, and recurrence in gastric cancer.METHODS: The patients with preoperative tumormakers [Carcinoembryonic antigen, Carbohydrate antigen(CA) 19-9, and CA 125] and elective gastrectomy between January 2000 and December 2009 at Chungbuk National University Hospital were enrolled in this study. We analyzed the relationship among the tumor makers, curative resection and recurrence, retrospectively.RESULTS: Among the 679 patients with gastric cancer, curative resection was 93.6%(n = 636) and noncurative resection was 6.4%(n = 43). The independent risk factors for the non-curative resection were tumor location and the positivity of preoperative serum CA 19-9 and CA 125 levels. After curative resection, the independent prognostic risk factors for recurrence in curative resection were gender, stage, and preoperative increased serum CA 125 level(HR = 2.431, P =0.020), in a multivariate analysis. CONCLUSION: Preoperative CA 125 is a useful predictive biomarker for curative resection and prognostic biomarker for recurrence in gastric cancer patients. | Dae Hoon Kim Hyo Yung Yun Dong Hee Ryu Hye-Suk Han Joung-Ho Han Soon Man Yoon Sei Jin Youn | 2015 | World Journal of Gastroenterology2015，21，4： | 6 |
| 10 | Nonalcoholic fatty liver disease is associated with coronary artery disease in Koreans显示文摘AIM:To investigate whether nonalcoholic fatty liver disease(NAFLD)affects coronary artery disease(CAD)and identify candidate mediators.METHODS:Patients who underwent coronary angiography were consecutively recruited.The patients were classified into four groups by coronary artery stenosis:A,insignificant;B,one-vessel disease;C,two-vessel disease;and D,three-vessel disease.Abdominal ultrasonography was performed to determine the presence of a fatty liver and categorize by grade:0,no evidence;1,mild;2,moderate;and 3,severe.We measured not only known CAD risk factors,but also serum insulin,HOMA-index,adiponectin,interleukin-6,tumor necrosis factor-αand high-sensitivity C-reactive protein levels.RESULTS:Of the 134 patients who met the inclusion criteria,82(61.2%)had ultrasonographically diagnosed NAFLD.Among the 46 patients with CAD,37(80.4%)had evidence of a fatty liver.The two groups(A vs B-D)were significantly different in terms of age,total cholesterol,triglycerides,low-density lipoprotein levels and fatty liver.Coronary artery stenosis was strongly associated with fatty liver in a grade-dependent manner(P=0.025).In binary logistic regression,NAFLD was a significant independent predictor of CAD(P=0.03,OR=1.685;95%CI:1.051-2.702).Among the candidate mediators,the serum adiponectin level showed a trend toward lowering based on CAD progression(P=0.071).CONCLUSION:NAFLD is an independent risk factor for CAD in a grade-dependent manner.Moreover,adiponectin might be related to the pathogenesis of NAFLD. | Dae Hee Choi Sung Joon Lee Chang Don Kang Myoung Ok Park Dong Wook Choi Tae Suk Kim Wonho Lee Byung Ryul Cho Yong Hoon Kim Bong-ki Lee Dong Ryeol Ryu Ji Won Lee | 2013 | World Journal of Gastroenterology2013，19，38： | 5 |
| 11 | A novel cleansing score system for capsule endoscopy显示文摘AIM:To suggest a new cleansing score system for small bowel preparation and to evaluate its clinical efficacy.METHODS:Twenty capsule endoscopy cases were reviewed and small bowel preparation was assessed with the new scoring system.For the assessment,two visual parameters were used:proportion of visualized mucosa and degree of obscuration.Representative frames from small bowel images were serially selected and scored at 5-min intervals.Intraclass correlation coefficient(ICC)was obtained to assess the reliability of the new scoring system.For efficacy evaluation and validation,scores of our new scoring system were compared with another previously reported cleansing grading system.RESULTS:Concordance with the previous system,inter-observer agreement,and intra-patient agreement were excellent with ICC values of 0.82,0.80,and 0.76,respectively.The intra-observer agreements at four-week intervals were also excellent.The cutoff value of adequate image quality was found to be 2.25.CONCLUSION:Our new scoring system is simple,efficient,and can be considered to be applicable in clinical practice and research. | Sung Chul Park Bora Keum Jong Jin Hyun Yeon Seok Seo Yong Sik Kim Yoon Tae Jeen Hoon Jai Chun Soon Ho Um Chang Duck Kim Ho Sang Ryu | 2010 | World Journal of Gastroenterology2010，16，7： | 5 |
| 12 | Computed tomography findings for predicting severe acute hepatitis with prolonged cholestasis显示文摘AIM: To evaluate the significance of computed tomography (CT) findings in relation to liver chemistry and the clinical course of acute hepatitis. METHODS: Four hundred and twelve patients with acute hepatitis who underwent enhanced CT scanning were enrolled retrospectively. Imaging findings were analyzed for the following variables: gallbladder wall thickness (GWT), arterial heterogeneity, periportal tracking, number and maximum size of lymph nodes, presence of ascites, and size of spleen. The serum levels of alanine aminotransferase, alkaline phosphatase, bilirubin, albumin, and prothrombin time were measured on the day of admission and CT scan, and laboratory data were evaluated every 2-4 d for all subjects during hospitalization. RESULTS: The mean age of patients was 34.4 years, and the most common cause of hepatitis was hepatitis A virus (77.4%). The mean GWT was 5.2 mm. The number of patients who had findings of arterial heterogeneity, periportal tracking, lymph node enlargement > 7 mm, and ascites was 294 (80.1%), 348 (84.7%), 346 (84.5%), and 56 (13.6%), respectively. On multivariate logistic regression, male gender [odds ratio (OR) = 2.569, 95%CI: 1.477-4.469, P = 0.001], toxic hepatitis (OR = 3.531, 95%CI: 1.444-8.635, P = 0.006), level of albumin (OR = 2.154, 95%CI: 1.279-3.629, P = 0.004), and GWT (OR = 1.061, 95%CI: 1.015-1.110, P = 0.009) were independent predictive factors for severe hepatitis. The level of bilirubin (OR = 1.628, 95%CI: 1.331-1.991, P < 0.001) and GWT (OR = 1.172, 95%CI: 1.024-1.342,P = 0.021) were independent factors for prolonged cholestasis in multivariate analysis. CONCLUSION: In patients with acute hepatitis, GWT on CT scan was an independent predictor of severe hepatitis and prolonged cholestasis. | Sang Jung Park Jin Dong Kim Yeon Seok Seo Beom Jin Park Min Ju Kim Soon Ho Um Chang Ha Kim Hyung Joon Yim Soon Koo Baik Jin Yong Jung Bora Keum Yoon Tae Jeen Hong Sik Lee Hoon Jai Chun Chang Duck Kim Ho Sang Ryu | 2013 | World Journal of Gastroenterology2013，19，16： | 4 |
| 13 | Radiotherapy for 65 patients with advanced unresectable hepatocellular carcinoma显示文摘AIM: To evaluate the efficacy of radiotherapy (RT) in patients with advanced unresectable hepatocellular carcinoma (HCC). METHODS: A total of 65 patients were treated with RT in the Korea University Medical Center. The median age of the patients was 60 years, and 86.2% were men. 18.5% and 81.5% of the patients were diagnosed as TNM stage Ⅲ and Ⅳ-A, respectively. Treatment response was assessed 4 mo after initiation of RT. Tumor regression rate 1 mo after initiation of RT (TRR1m) was also assessed. Duration of survival was calculated from the initiation of RT. RESULTS: The objective treatment response was 56.9%. The 12 mo survival rate was 34.7%. Predictive factors for survival were Child-Pugh grade, α-fetoprotein level and treatment response. An objective response was achieved more frequently in patients with TRR1m ≥ 20% than in those with TRR1m < 20% (P < 0.001). CONCLUSION: RT is effective in treating advanced HCC with a tumor response rate of 56.9%. | Yeon Seok Seo Jin Nam Kim Bora Keum Sanghoon Park Yong Dae Kwon Yong Sik Kim Yoon Tae Jeen Hoon Jai Chun Chul Yong Kim Chang Duck Kim Ho Sang Ryu Soon Ho Um | 2008 | World Journal of Gastroenterology2008，14，15： | 4 |
| 14 | Metallic stent placement in the palliative treatment of malignant gastroduodenal obstructions: prospective evaluation of results and factors influencing outcome in 213 patients显示文摘 | Jin Hyoung Kim Ho-Young Song Ji Hoon Shin Eugene Choi Tae Won Kim Hwoon-Yong Jung Gin Hyug Lee Sung Koo Lee Myung-Hwan Kim Min-Hee Ryu Yoon-Koo Kang Byung Sik Kim Jeong Hwan Yook | 2007 | Gastrointestinal Endoscopy2007，，2： | 2 |
| 15 | Recurrence and Prognostic Factors of Ampullary Carcinoma after Radical Resection: Comparison with Distal Extrahepatic Cholangiocarcinoma显示文摘 | Sang Myung Woo MD Ji Kon Ryu MD Sang Hyub Lee MD Ji Won Yoo MD Joo Kyung Park MD Yong-Tae Kim MD Jin-Young Jang MD Sun-Whe Kim MD Gyeong Hoon Kang MD Yong Bum Yoon MD | 2007 | Annals of Surgical Oncology2007，，11： | 2 |
| 16 | In vitro anti-rotavirus activity of polyphenol compounds isolated from the roots of Glycyrrhiza uralensis显示文摘 | Hyung-Jun Kwon Ha-Hyun Kim Young Bae Ryu Jang Hoon Kim Hyung Jae Jeong Seung-Woong Lee Jong Sun Chang Kyoung-Oh Cho Mun-Chual Rho Su-Jin Park Woo Song Lee | 2010 | Bioorganic & Medicinal Chemistry2010，，21： | 2 |
| 17 | Anchoring flap versus flared end, fully covered self-expandable metal stents to prevent migration in patients with benign biliary strictures: a multicenter, prospective, comparative pilot study (with videos)显示文摘 | Do Hyun Park Sang Soo Lee Tae Hoon Lee Choong Heon Ryu Hong Jun Kim Dong-Wan Seo Sang-Heum Park Sung-Koo Lee Myung-Hwan Kim Sun-Joo Kim | 2011 | Gastrointestinal Endoscopy2011，，1： | 2 |
| 18 | Oleanolic acid attenuates MK-801-induced schizophrenia-like behaviors in mice显示文摘 | Se Jin Park Younghwa Lee Hee Kyong Oh Hyung Eun Lee Younghwan Lee Sang Yoon Ko Boseong Kim Jae Hoon Cheong Chan Young Shin Jong Hoon Ryu | 2014 | Neuropharmacology2014，，： | 2 |
| 19 | DJ-1 mediates paraquat-induced dopaminergic neuronal cell death显示文摘 | Hyun Joo Kwon Jun Young Heo Jung Hee Shim Ji Hoon Park Kang Sik Seo Min Jeong Ryu Jeong Su Han Minho Shong Jin H. Son Gi Ryang Kweon | 2011 | Toxicology Letters2011，，： | 2 |
| 20 | Comparison of Chemoembolization with and without Radiation Therapy and Sorafenib for Advanced Hepatocellular Carcinoma with Portal Vein Tumor Thrombosis: A Propensity Score Analysis显示文摘 | Gi-Ae Kim Ju Hyun Shim Sang Min Yoon Jinhong Jung Jong Hoon Kim Min-Hee Ryu Baek-Yeol Ryoo Yoon-Koo Kang Danbi Lee Kang Mo Kim Young-Suk Lim Han Chu Lee Young-Hwa Chung Yung Sang Lee | 2014 | Journal of Vascular and Interventional Radiology2014，，： | 2 |
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