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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 | Programmed death ligand-1 expression and its prognostic role in esophageal squamous cell carcinoma显示文摘AIM To investigate the expression and prognostic role of programmed death ligand-1(PD-L1) in locally advanced esophageal squamous cell carcinoma(ESCC).METHODS A total of 200 patients with ESCC who underwent radical esophagectomy with standard lymphadenectomy as the initial definitive treatment in Seoul National University Hospital from December 2000 to April 2013 were eligible for this analysis. Tissue microarrays were constructed by collecting tissue cores from surgical specimens, and immunostained with antibodies directed against PD-L1, p16, and c-Met. Medical records were reviewed retrospectively to assess clinical outcomes. Patients were divided into two groups by PD-L1 status, and significant differences in clinicopathologic characteristics between the two groups were assessed. RESULTS Tumor tissues from 67 ESCC patients(33.5%) were PDL1-positive. Positive p16 expression was observed in 21 specimens(10.5%). The H-score for c-Met expression was ≥ 50 in 42 specimens(21.0%). Although PDL1-positivity was not significantly correlated with any clinical characteristics including age, sex, smoking/alcoholic history, stage, or differentiation, H-scores for c-Met expression were significantly associated with PDL1-positivity(OR = 2.34, 95%CI: 1.16-4.72, P = 0.017). PD-L1 expression was not significantly associated with a change in overall survival(P = 0.656). In contrast, the locoregional relapse rate tended to increase(P = 0.134), and the distant metastasis rate was significantly increased(HR = 1.72, 95%CI: 1.01-2.79, P = 0.028) in patients with PD-L1-positive ESCC compared to those with PD-L1-negative ESCC.CONCLUSION PD-L1 expression is positively correlated with c-Met expression in ESCC. PD-L1 may play a critical role in distant failure and progression of ESCC. | Ryul Kim Bhumsuk Keam Dohee Kwon Chan-Young Ock Miso Kim Tae Min Kim Hak Jae Kim Yoon Kyung Jeon In Kyu Park Chang Hyun Kang Dong-Wan Kim Young Tae Kim Dae Seog Heo | 2016 | World Journal of Gastroenterology2016，22，37： | 14 |
| 3 | Brain-derived neurotrophic factor mediates macrophage migration inhibitory factor to protect neurons against oxygen-glucose deprivation显示文摘Macrophage migration inhibitory factor(MIF)is a chemokine that plays an essential role in immune system function.Previous studies suggested that MIF protects neurons in ischemic conditions.However,few studies are reported on the role of MIF in neurological recovery after ischemic stroke.The purpose of this study is to identify the molecular mechanism of neuroprotection mediated by MIF.Human neuroblastoma cells were incubated in Dulbecco’s modified Eagle’s medium under oxygen-glucose deprivation(OGD)for 4 hours and then returned to normal aerobic environment for reperfusion(OGD/R).30 ng/mL MIF recombinant(30 ng/mL)or ISO-1(MIF antagonist;50μM)was administered to human neuroblastoma cells.Then cell cultures were assigned to one of four groups:control,OGD/R,OGD/R with MIF,OGD/R with ISO-1.Cell viability was analyzed using WST-1 assay.Expression levels of brain-derived neurotrophic factor(BDNF),microtubule-associated protein 2(MAP2),Caspase-3,Bcl2,and Bax were detected by western blot assay and immunocytochemistry in each group to measure apoptotic activity.WST-1 assay results revealed that compared to the OGD/R group,cell survival rate was significantly higher in the OGD/R with MIF group and lower in the OGD/R with ISO-1 group.Western blot assay and immunocytochemistry results revealed that expression levels of BDNF,Bcl2,and MAP2 were significantly higher,and expression levels of Caspase-3 and Bax were significantly lower in the MIF group than in the OGD/R group.Expression levels of BDNF,Bcl2,and MAP2 were significantly lower,and expression levels of Caspase-3 and Bax were significantly higher in the ISO-1 group than in the OGD/R group.MIF administration promoted neuronal cell survival and induced high expression levels of BDNF,MAP2,and Bcl2(anti-apoptosis)and low expression levels of Caspase-3 and Bax(pro-apoptosis)in an OGD/R model.These results suggest that MIF administration is effective for inducing expression of BDNF and leads to neuroprotection of neuronal cells against hypoxic injury. | Su Hwan Bae Mi Ran Yoo Ye Yeong Kim In Kyung Hong Mi Hee Kim Seung Hak Lee Dae Yul Kim | 2020 | Neural Regeneration Research2020，15，8： | 11 |
| 4 | Diffusion-weighted imaging of biliopancreatic disorders:Correlation with conventional magnetic resonance imaging显示文摘Diffusion-weighted magnetic resonance imaging(DWI)is a well established method for the evaluation of intracranial diseases,such as acute stroke.DWI for extracranial application is more difficult due to physiological motion artifacts and the heterogeneous composition of the organs.However,thanks to the newer technical development of DWI,DWI has become increasingly used over the past few years in extracranial organs including the abdomen and pelvis.Most previous studies of DWI have been limited to the evaluation of diffuse parenchymal abnormalities and focal lesions in abdominal organs,whereas there are few studies about DWI for the evaluation of the biliopancreatic tract.Although further studies are needed to determine its performance in evaluating bile duct,gallbladder and pancreas diseases,DWI has potential in the assessment of the functional information on the biliopancreatic tract concerning the status of tissue cellularity,because increased cellularity is associated with impeded diffusion,as indicated by a reduction in the apparent diffusion coefficient.The detection of malignant lesions and their differentiation from benign tumor-like lesions in the biliopancreatic tract could be improved using DWI in conjunction with findings obtained with conventional magnetic resonance cholagiopancreatography.Additionally,DWI can be useful for the assessment of the biliopancreatic tract in patients with renal impairment because contrast-enhanced computed tomography or magnetic resonance scans should be avoided in these patients. | Nam Kyung Lee Suk Kim Gwang Ha Kim Dong Uk Kim Hyung Il Seo Tae Un Kim Dae Hwan Kang Ho Jin Jang | 2012 | World Journal of Gastroenterology2012，18，31： | 8 |
| 5 | Open versus laparoscopic surgery for mid or low rectal cancer after neoadjuvant chemoradiotherapy (COREAN trial): short-term outcomes of an open-label randomised controlled trial显示文摘 | Sung-Bum Kang Ji Won Park Seung-Yong Jeong Byung Ho Nam Hyo Seong Choi Duck-Woo Kim Seok-Byung Lim Taek-Gu Lee Dae Yong Kim Jae-Sung Kim Hee Jin Chang Hye-Seung Lee Sun Young Kim Kyung Hae Jung Yong Sang Hong Jee Hyun Kim Dae Kyung Sohn Dae-Hyun Kim Jae H | 2010 | Lancet Oncology2010，，7： | 5 |
| 6 | Efficacy of Pegylated Interferon Monotherapy versus Sequential Therapy of Entecavir and Pegylated Interferon in Hepatitis B e Antigen-Positive Hepatitis B Patients: A Randomized, Multicenter, Phase IIIb Open-Label Study (POTENT Study)显示文摘 | Dae Won Jun Sang Bong Ahn Tae Yeob Kim Joo Hyun Sohn Sang Gyune Kim Se Whan Lee Byung Ho Kim Dong Joon Kim Ja Kyung Kim Hyoung Su Kim Seong Gyu Hwang Won Choong Choi Won Young Tak Heon Ju Lee Ki Tae Yoon Byung Cheol Yun Sung Wook Lee Soon Koo Baik Seung Ha Park Ji Won Park Sol Ji Park Ji Sung Lee | 2018 | Chinese Medical Journal2018，，14： | 5 |
| 7 | Endocrine Regulation of Energy Metabolism by the Skeleton显示文摘 | Na Kyung Lee Hideaki Sowa Eiichi Hinoi Mathieu Ferron Jong Deok Ahn Cyrille Confavreux Romain Dacquin Patrick J. Mee Marc D. McKee Dae Young Jung Zhiyou Zhang Jason K. Kim Franck Mauvais-Jarvis Patricia Ducy Gerard Karsenty | 2007 | Cell2007，，3： | 5 |
| 8 | Osthol attenuates hepatic steatosis via decreased triglyceride synthesis not by insulin resistance显示文摘AIM: To evaluate the effects of osthol on intrahepatic fat synthesis, β-oxidation, inflammation, and insulin resistance by multifaceted analysis.METHODS: Sprague-Dawley rats(n = 30) were randomly divided into control, non-alcoholic fatty liver disease(NAFLD), and osthol groups. NAFLD and osthol groups were fed with a high-fat diet for 14 wk. After 8 wk of the high-fat diet, the osthol group also received osthol 20 mg/kg orally 5 times/wk. To assess the insulin resistance, oral glucose tolerance was performed at the end of 14 wk. Immunohistochemical(4-HNE, F4/80) and hematoxylin and eosin(HE) staining wereperformed on liver tissue extracts after animal sacrifice at 14 wk. SREBP1 c, FAS, SCD-1, PPAR-α, CROT, MCP-1, IRS-1, and IRS-2 mRNA expressions were assessed with reverse transcription-polymerase chain reaction.RESULTS: HE staining revealed that, compared with the NAFLD group, the osthol group showed significantly decreased intrahepatic fat content(39.4% vs 21.0%; P = 0.021). SREBP1 c expression in the NAFLD group increased compared to controls(P = 0.0001), while osthol treatment decreased SREBP1 c expression compared with the NAFLD group(P = 0.0059). In the osthol group, intrahepatic FAS and SCD-1, which act downstream of SREBP1 c, decreased significantly compared with the NAFLD group. Moreover, PPAR-α expression in the osthol group was also significantly higher than in the NAFLD group(P = 0.0147).CONCLUSION: Osthol treatment attenuated liver steatosis by decreasing de novo liver triglyceride synthesis and had nominal effects on insulin resistance and liver inflammation. | Ho Hyun Nam Dae Won Jun Hye Joon Jeon Jai Sun Lee Waqar Khalid Saeed Eun Kyung Kim | 2014 | World Journal of Gastroenterology2014，20，33： | 4 |
| 9 | Multicenter Prospective Comparative Study of Robotic Versus Laparoscopic Gastrectomy for Gastric Adenocarcinoma显示文摘 | Hyoung-Il Kim Sang-Uk Han Han-Kwang Yang Young-Woo Kim Hyuk-Joon Lee Keun Won Ryu Joong-Min Park Ji Yeong An Min-Chan Kim Sungsoo Park Kyo Young Song Sung Jin Oh Seong-Ho Kong Byoung Jo Suh Dae Hyun Yang Tae Kyung Ha Youn Nam Kim Woo Jin Hyung | 2016 | Annals of Surgery2016，，1： | 4 |
| 10 | MAINTENANCE OF MULTI-STATE PRODUCTION SYSTEMS DETERIORATED BY RANDOM SHOCKS AND PRODUCTION显示文摘We consider the preventive maintenance of a production system that is deteriorated by random shocks and the production process itself.The degree of deterioration is modeled by discrete and finite states.Shocks arrive according to a Poisson process and deteriorate the system by random amounts.The system may deteriorate whenever it produces an item.The system is continuously monitored and repaired if the system state is at or above a predetermined level for maintenance.We analyze the lifetime,product quantity,average cost,and average profit considering revenue from the product and cost due to setup,operation,and repair.Assuming a structure of system parameters and costs,using numerical examples,we investigate the impact of production and shock arrivals on the average profit and the optimal maintenance level that maximizes the average profit.The proposed model is applicable to manufacturing tasks in which machines wear due to production,for example,press processes,milling,turning,punching,and drilling. | Won Seok YANG Dae E.LIM Kyung C.CHAE | 2011 | Journal of Systems Science and Systems Engineering2011，20，1： | 3 |
| 11 | Clinical impact of atypical endoscopic features in rectal neuroendocrine tumors显示文摘AIM: To validate the association between atypical endoscopic features and lymph node metastasis(LNM).METHODS: A total of 247 patients with rectal neuroendocrine tumors(NETs) were analyzed. Endoscopic images were reviewed independently by two endoscopists, each of whom classified tumors by sized and endoscopic features, such as shape, color, and surface change(kappa coefficient 0.76 for inter-observer agreement). All of patients underwent computed tomography scans of abdomen and pelvis for evaluation of LNM. Univariate and multivariate analyses were performed to identify the factors associated with LNM. Additionally, the association between endoscopic atypical features and immunohistochemical staining of tumors was analyzed.RESULTS: Of 247 patients, 156(63.2%) were male and 15(6.1%) were showed positive for LNM. On univariate analysis, tumor size(P < 0.001), shape(P < 0.001), color(P < 0.001) and surface changes(P < 0.001) were significantly associated with LNM. On multivariate analysis, tumor size(OR = 11.53, 95%CI: 2.51-52.93, P = 0.002) and atypical surface(OR = 27.44, 95%CI: 5.96-126.34, P < 0.001) changes were independent risk factors for LNM. The likelihood of atypical endoscopic features increased as tumor size increased. Atypical endoscopic features were associated with LNM in rectal NETs < 10 mm(P = 0.005) and 10-19 mm(P = 0.041) in diameter. Immunohistochemical staining showed that the rate of atypical endoscopic features was higher in non L-cell tumors.CONCLUSION: Atypical endoscopic features as well as tumor size are predictive factors of LNM in patients with rectal NETs. | Jong Hee Hyun Seong Dae Lee Eui Gon Youk Jae Bum Lee Enu-Jung Lee Hee Jin Chang Dae Kyung Sohn | 2015 | World Journal of Gastroenterology2015，21，47： | 3 |
| 12 | Open versus laparoscopic surgery for mid-rectal or low-rectal cancer after neoadjuvant chemoradiotherapy (COREAN trial): survival outcomes of an open-label, non-inferiority, randomised controlled trial显示文摘 | Seung-Yong Jeong Ji Won Park Byung Ho Nam Sohee Kim Sung-Bum Kang Seok-Byung Lim Hyo Seong Choi Duck-Woo Kim Hee Jin Chang Dae Yong Kim Kyung Hae Jung Tae-You Kim Gyeong Hoon Kang Eui Kyu Chie Sun Young Kim Dae Kyung Sohn Dae-Hyun Kim Jae-Sung Kim Hye Seu | 2014 | Lancet Oncology2014，，7： | 3 |
| 13 | Transanal rectosigmoid resection via natural orifice translumenal endoscopic surgery (NOTES) with total mesorectal excision in a large human cadaver series显示文摘 | Dana A. Telem Kyung Su Han Min-Chan Kim Ifode Ajari Dae Kyung Sohn Kevin Woods Varun Kapur Mohammad A. Sbeih Silvana Perretta David W. Rattner Patricia Sylla | 2013 | Surgical Endoscopy2013，，1： | 3 |
| 14 | Rectal tonsil:A case report and literature review显示文摘The rectal tonsil,a reactive proliferation of lymphoidtissue located in the rectum,is rare.Histologically,benign lymphoid hyperplasia of the rectum is usuallycharacterized by large lymphoid follicles with activegerminal centers and a narrow surrounding mantlezone and marginal zone.This lesion is benign,but must be differentiated from the polypoid type of mucosaassociated lymphoid tissue lymphomas.In the current paper,we present a case of rectal tonsil in a 59-yearold woman.We describe the endoscopic ultrasound imaging findings with literature review. | Joung Boom Hong Hyung Wook Kim Dae Hwan Kang Cheol Woong Choi Su Bum Park Dong Jun Kim Byoung Hoon Ji Kyung Won Koh | 2015 | World Journal of Gastroenterology2015，21，8： | 3 |
| 15 | 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 |
| 16 | Pathologic Nodal Classification Is the Most Discriminating Prognostic Factor for Disease-Free Survival in Rectal Cancer Patients Treated With Preoperative Chemoradiotherapy and Curative Resection显示文摘 | Tae Hyun Kim Hee Jin Chang Dae Yong Kim Kyung Hae Jung Yong Sang Hong Sun Young Kim Ji Won Park Jae Hwan Oh Seok-Byung Lim Hyo Seong Choi Seung-Yong Jeong | 2010 | International Journal of Radiation Oncology, Biology, Physics2010，，4： | 2 |
| 17 | Neoadjuvant Chemoradiotherapy Affects the Indications for Lateral Pelvic Node Dissection in Mid/Low Rectal Cancer with Clinically Suspected Lateral Node Involvement: A Multicenter Retrospective Cohort Study显示文摘 | Heung-Kwon Oh Sung-Bum Kang Sung-Min Lee Soo Young Lee Myoung Hun Ihn Duck-Woo Kim Ji Hoon Park Young Hoon Kim Kyung Ho Lee Jae-Sung Kim Jin Won Kim Jee Hyun Kim Tae-Young Chang Sung-Chan Park Dae Kyung Sohn Jae Hwan Oh Ji Won Park Seung-Bum Ryoo Seung-Yo | 2014 | Annals of Surgical Oncology2014，，： | 2 |
| 18 | Association of the mi R ‐146a C>G, mi R ‐149 T>C, mi R ‐196a2 T>C, and mi R ‐499 A>G polymorphisms with gastric cancer risk and survival in the korean population显示文摘 | Dae Ho Ahn HyungChul Rah Young‐Kook Choi Young Joo Jeon Kyung Tae Min KyuBum Kwack Sung Pyo Hong Seong Gyu Hwang Nam Keun Kim | 2013 | Mol Carcinog2013，，1： | 2 |
| 19 | Bacteriophage cocktail supplementation improves growth performance,gut microbiome and production traits in broiler chickens显示文摘Background:Effective antibiotic alternatives are urgently needed in the poultry industry to control disease outbreaks.Phage therapy mainly utilizes lytic phages to kill their respective bacterial hosts and can be an attractive solution to combating the emergence of antibiotic resistance in livestock.Methods:Five hundred and four,one-day-old broilers(Ross 308)were allotted to 1 of 4 treatment groups in a completely randomized design.Treatments consisted of CON(basal diet),PC(CON+0.025%Avilamax®),BP 0.05(CON+0.05%bacteriophage),and BP 0.10(CON+0.10%bacteriophage).Results:A significant linear effect on body weight gain(BWG)was observed during days 1–7,days 22–35,and cumulatively in bacteriophage(BP)supplemented groups.The BWG tended to be higher(P=0.08)and the feed intake(FI)was increased(P=0.017)in the PC group over CON group.A greater(P=0.016)BWG and trends in increased FI(P=0.06)were observed in the experiment in birds fed PC than CON diet.At the genus level,the relative abundance of Lactobacillus was decreased in PC(65.28%),while it was similar in BP 0.05 and BP 0.10(90.65%,86.72%)compared to CON(90.19%).At the species level,the relative abundance of Lactobacillus salivarus was higher in BP 0.05(40.15%)and BP 0.10(38.58%)compared to the CON(20.04%)and PC(18.05%).A linear reduction in the weight of bursa of Fabricius(P=0.022)and spleen(P=0.052)was observed in birds fed graded level of BP and an increase(P=0.059)in the weight of gizzard was observed in birds fed PC over BP diets.Linear and quadratic responses were observed in redness of breast muscle color in birds fed graded level of BP.Conclusions:The inclusion of the 0.05%and 0.1%BP cocktail linearly improved broiler weight during the first 7 days,22–35 days and cumulatively,whereas 0.05%BP addition was sufficient for supporting immune organs,bursa and spleen as well as enhancing gut microbiome,indicating the efficacy of 0.05%BP as a substitute antibiotic growth promoter in broiler diets. | Santi Devi Upadhaya Je Min Ahn Jae Hyoung Cho Jin Young Kim Dae Kyung Kang Sung Woo Kim Hyeun Bum Kim In Ho Kim | 2021 | Journal of Animal Science and Biotechnology2021，12，4： | 2 |
| 20 | Diagnosis of gastric epithelial neoplasia:Dilemma for Korean pathologists显示文摘The histopathological diagnosis of gastric mucosal biopsy and endoscopic mucosal resection/endoscopic submucosal dissection specimens is important,but the diagnostic criteria,terminology,and grading system are not the same in the East and West.A structurally invasive focus is necessary to diagnose carcinoma for most Western pathologists,but Japanese pathologists make a diagnosis of cancer based on severe dysplastic cytologic atypia irrespective of the presence of invasion.Although the Vienna classification was introduced to reduce diagnostic discrepancies,it has been difficult to adopt due to different concepts for gastric epithelial neoplastic lesions.Korean pathologists experience much difficulty making a diagnosis because we are influenced by Japanese pathologists as well as Western medicine.Japan is geographically close to Korea,and academic exchanges are active.Additionally,Korean doctors are familiar with Western style medical terminology.As a result,the terminology,definitions,and diagnostic criteria for gastric intraepithelial neoplasia are very heterogeneous in Korea.To solve this problem,the Gastrointestinal Pathology Study Group of the Korean Society of Pathologists has made an effort and has suggested guidelines for differential diagnosis:(1) a diagnosis of carcinoma is based on invasion;(2) the most important characteristic of low grade dysplasia is the architectural pattern such as regular distribution of crypts without severe branching,budding,or marked glandular crowding;(3) if nuclear pseudostratification occupies more than the basal half of the cryptal cells in three or more adjacent crypts,the lesion is considered high grade dysplasia;(4) if severe cytologic atypia is present,careful inspection for invasive foci is necessary,because the risk for invasion is very high;and(5) other structural or nuclear atypia should be evaluated to make a final decision such as cribriform pattern,papillae,ridges,vesicular nuclei,high nuclear/cytoplasmic ratio,loss of nuclear polarity,thick and irregular nuclear membrane,and nucleoli. | Joon Mee Kim Mee-Yon Cho Jin Hee Sohn Dae Young Kang Cheol Keun Park Woo Ho Kim So-Young Jin Kyoung Mee Kim Hee Kyung Chang Eunsil Yu Eun Sun Jung Mee Soo Chang Jong Eun Joo Mee Joo Youn Wha Kim Do Youn Park Yun Kyung Kang Sun Hoo Park Hye Seung Han Young Bae Kim Ho Sung Park Yang Seok Chae Kye Won Kwon Hee Jin Chang The Gastrointestinal Pathology Study Group of Korean Society of Pathologists | 2011 | World Journal of Gastroenterology2011，17，21： | 2 |
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