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Predictive value of E-cadherin and Ep CAM for detection of metastatic lymph node in early gastric cancer

Chinese Journal of Cancer Research 2020年第5期32卷 614-620页

作者： bang wool eom Keun Won Ryu Hong Man Yoon Myeong-Cherl Kook Center for Gastric Cancer National Cancer CenterGoyang-si 10408Republic of Korea

Objective:There has been a demand for a tumor-specific marker for metastatic lymph nodes in sentinel navigation surgery for gastric *** aim of this study is to analyze protein expression in both primary tumors and metastatic lymph nodes in early gastric cancer ***:We collected primary tumors and metastatic lymph nodes from 71 patients who underwent curative gastrectomy and pathologically diagnosed with T1 N1 or T1 N2(8 th Union for International Cancer Control 8 th edition/American Joint Committee on Cancer staging system)gastric *** was used to determine the expression of six cell membrane proteins,including carcinoembryonic antigen(CEA),E-cadherin,epithelial cell adhesion molecule(Ep CAM),P-cadherin,CD44 v6,and c-erb B2 in the patient ***:The expression of CEA,E-cadherin,Ep CAM,P-cadherin,CD44 v6 and c-erb B2 in the evaluable primary tumor samples was 75.4%,97.1%,100%,89.9%,11.1%and 7.2%,*** cases wherein both the primary tumor and metastatic lymph nodes were evaluable,double positivity(expression in both primary tumor and metastatic lymph nodes)was observed for CEA,E-cadherin,Ep CAM,P-cadherin,CD44 v6 and c-erb B2 in 53.2%,97.9%,98.1%,76.6%,0 and 6.8%of the cases,*** proportion of metastatic lymph nodes positive for CEA,E-cadherin,Ep CAM,P-cadherin,CD44 v6 and c-erb B2 was 71.4%,100%,98.1%,83.7%,0,and75%,respectively in primary tumors positive for the same ***:E-cadherin and Ep CAM had an overlap of 100%and 98.1%between the primary tumor and metastatic lymph nodes,***,E-cadherin and Ep CAM are potential molecular markers to detect metastatic lymph nodes in patients with early gastric cancer.

关键词： Gastric cancer tumor-associated protein E-cadherin EpCAM lymph node

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Laparoscopy-assisted pylorus-preserving gastrectomy for early gastric cancer: A retrospective study of long-term functional outcomes and quality of life

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World Journal of Gastroenterology 2019年第36期25卷 5494-5504页

作者： bang wool eom Boram Park Hong Man Yoon Keun Won Ryu Young-Woo Kim Center for Gastric Cancer National Cancer Center Goyang 10408 South Korea Biostatistics Collaboration Team Research Core Research institute National Cancer Center Goyang 10408 South Korea

BACKGROUND Laparoscopy-assisted pylorus-preserving gastrectomy (LAPPG) was known to have benefits of function-preserving surgery compared to laparoscopy-assisted distal gastrectomy (LADG). However, in clinical settings, delayed gastric emptying and esophageal reflux following LAPPG can be serious issues, making surgeons reluctant to perform LAPPG. It is unclear that LAPPG had better longterm functional outcomes and quality of life compared to LADG. AIM To evaluate the long-term functional outcomes and patient-reported quality of life of LAPPG compared to those of LADG. METHODS We reviewed the clinicopathological data of 195 patients who underwent LADG with Billroth II anastomosis and 101 patients who underwent LAPPG for cT1N0 gastric cancer in the middle third of the stomach between 2012 and 2015. Postoperative complications, nutritional parameters, and survey results of the European Organization for Research and Treatment of Cancer Questionnaire C30 and STO22 questionnaire were compared between the two groups. RESULTS The serum hemoglobin level was significantly higher in the LAPPG group than in the LADG group (P < 0.001). In the endoscopic findings, incidence of bile reflux was lower (P < 0.001);however, the incidence of residual food was higher in the LAPPG group than in the LADG group (P < 0.001). Regarding the quality of life score, the LAPPG group had a better physical functioning score (86.7 vs 90.0, P = 0.032) but also greater pain and reflux when compared to the LADG group [8.3 vs 16.7 in pain, 11.1 (interquartile range, 0, 22.2) vs 11.1 (interquartile range, 11.1, 33.3) in reflux, P = 0.034 and 0.001, respectively]. CONCLUSION LAPPG is beneficial to recovery of anemia and to bile reflux, however, it might be unfavorable in terms of pain and reflux symptoms compared to LADG with Billroth II anastomosis.

关键词： Gastric cancer Pylorus-preserving gastrectomy Function Quality of life

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Gastric cancer surgery in South Korea: Past, present, and future

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Chinese Journal of Cancer Research 2023年第6期35卷 627-635页

作者： Sung Gon Kim Sang Eok Lee bang wool eom Hong Man Yoon Young-Woo Kim Keun Won Ryu Department of Surgery Konyang University HospitalDaejeon 35365Republic of Korea Center for Gastric Cancer Research Institute&HospitalNational Cancer CenterGoyang-si 410-769Republic of Korea

Gastric cancer remains a significant global health concern and its surgical management approaches have undergone significant changes in South Korea and worldwide. Subtotal or total gastrectomy with D2 lymph node dissection is well established as a standard surgical procedure for gastric cancer. With the active implementation of cancer screening in South Korea, the proportion of early gastric cancer cases has significantly increased over the past few decades, leading to a steady increase in the survival rate among patients. Furthermore, recent advances in surgical instruments and techniques have made minimally invasive surgery increasingly prevalent, not only for early but also for advanced gastric cancer. We aim to provide a comprehensive overview of the evolution and current status of gastric cancer surgery in South Korea.

关键词： Function-preserving surgery gastric cancer minimally invasive surgery surgery

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Factors associated with metastasis in superior mesenteric vein lymph node in subtotal gastrectomy for gastric cancer:Retrospective case control study

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Chinese Journal of Cancer Research 2020年第1期32卷 43-50页

作者： Won Ho Han Jungnam Joo bang wool eom Keun Won Ryu Young-Woo Kim Myeong-cherl Kook Hong Man Yoon Center for Gastric Cancer Research Institute&HospitalNational Cancer CenterGoyang-si 410-769Republic of Korea Division of Cancer Epidemiology and Prevention National Cancer CenterGoyang-si 410-769Republic of Korea

Objective: The revised Japanese treatment guideline for gastric cancer recommends dissection of the superior mesenteric vein lymph node(No. 14v LN) if there is metastasis in infrapyloric lymph node(No. 6 LN). However,it is still controversial whether LN dissection is necessary. The aim of this study was to investigate the factors associated with metastasis in No. 14v ***: Patients who underwent D2 lymphadenectomy between 2003 and 2010 were included. We excluded patients who underwent total gastrectomy, had multiple lesions, or had missing data about the status of metastasis in the LNs that were included in D2 lymphadenectomy. Clinicopathologic characteristics and the metastasis in regional LNs were compared between patients with No. 14v LN metastasis(14v+) and those without(14v-).Results: Five hundred sixty patients were included in this study. Univariate analysis showed that old age, larger tumor size, tumor location, differentiation, lymphatic invasion, venous invasion, perineural invasion, T classification, and N classification were related to metastasis in No. 14v LN. Multivariate analysis showed differentiation(P=0.027) and N classification(P<0.001) were independent related factors. Metastasis in infrapyloric lymph node(No. 6 LN) and proxiaml splenic lymph node(No. 11p LN) was independently associated with metastasis in No. 14v ***: Differentiation and N classification were independent factors associated with No. 14v LN metastasis, and No. 6 and No. 11p LN metastasis were independent risk factors for No. 14v LN metastasis.

关键词： Gastric cancer gastrectomy lymphadenectomy superior mesenteric vein risk factor

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Recent updates and current issues of sentinel node navigation surgery for early gastric cancer

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Chinese Journal of Cancer Research 2021年第2期33卷 142-149页

作者： Sung Gon Kim bang wool eom Hong Man Yoon Chan Gyoo Kim Myeong-Cherl Kook Young-Woo Kim Keun Won Ryu Center for Gastric Cancer Research Institute&HospitalNational Cancer CenterGoyang-si 410-769Republic of Korea

With the increase in the incidence of early gastric cancer(EGC),several endoscopic and laparoscopic approaches,such as endoscopic submucosal dissection and function-preserving gastrectomy,have been accepted as standard *** node navigation surgery(SNNS)is an ideal surgical option for preservation of most parts of the stomach and consequent maintenance of normal gastric function to improve quality of life in patients with *** many previous studies and clinical trials have demonstrated the safety and feasibility of the sentinel node concept in gastric cancer,the clinical application of SNNS is *** issues regarding technical standardization and oncological safety need to be *** several studies to resolve these problems are being actively performed,and SNNS might be an important surgical option in the treatment of gastric cancer in the future.

关键词： Sentinel node navigation surgery function-preserving surgery early gastric cancer SENORITA

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Intravenous iron supplementation may be superior to observation in acute isovolemic anemia after gastrectomy for cancer

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World Journal of Gastroenterology 2014年第7期20卷 1852-1857页

作者： Hong Man Yoon Young-Woo Kim Byung Ho Nam Daniel Reim bang wool eom Ji Yeon Park Keun Won Ryu Gastric Cancer Branch Research Institute and HospitalNational Cancer CenterGoyangsi 410-769South Korea Cancer Registration and Biostatistics Branch and Center for Clinical Trials National Cancer CenterGoyang-si 410-769South Korea Department of Surgery Soon Chun Hyang University HospitalSeoul 140-743South Kore

AIM: To determine whether the application of post-operative intravenous (IV)-iron for acute isovolemic anemia after gastrectomy for cancer may be effective.

关键词： Intravenous iron Observation Gastric cancer Acute isovolemic anemia Gastrectomy

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A comparative study of totally laparoscopic distal gastrectomy versus laparoscopic-assisted distal gastrectomy in gastric cancer patients: Short-term operative outcomes at a high-volume center

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Chinese Journal of Cancer Research 2018年第5期30卷 537-545页

作者： Won Ho Han Amir Ben Yehuda Deok-Hee Kim Seung Geun Yang bang wool eom Hong Man Yoon Young-Woo Kim Keun Won Ryu Center for Gastric Cancer National Cancer Center Department of Surgery Assaf Harofeh Medical Center

Objective： Laparoscopic gastrectomy has been established as a standard treatment for early gastric cancer, and its use is increasing recently. Compared with the conventional laparoscopy-assisted distal gastrectomy （LADG）, totally laparoscopic distal gastrectomy （TLDG） involves intracorporeal reconstruction, which can avoid the additional incision, resulting in pain reduction and early recovery. This study aimed to compare the short-term postoperative outcomes of TLDG vs. LADG in gastric cancer in a high-volume ***： A retrospective cohort study was conducted on 1,322 patients who underwent laparoscopic distal gastrectomy from June 2012 to June 2017 at the National Cancer Center, Korea. LAD G was performed in the early period before July 2015, and TLDG was applied in the later period. Postoperative short-term outcomes were compared in terms of complication and clinical course between the two groups. Pain score was measured by rating the pain intensity from 0 to 10 points on postoperative day （POD） 1 and 3. Results： A total of 667 patients underwent LADG and 655 patients underwent TLDG. Clinieopathologic characteristics were not different in both groups. Intraoperative estimated blood loss （EBL） was significantly lower in the TLDG group （P〈0.001）. Postoperative pain scores were significantly lower in the TLDG group than in the LADG group on POD 1 （5.1±1.5 vs. 4.8±1.4, P=0.015）. First flatus passage after operation was significantly earlier in the TLDG group （3.4±0.8 d vs. 3.2±0.6 d, P〈0.001）. There were no differences in postoperative complications and hospital stay between the two groups. Conclusions： Based on the reported short-term postoperative outcomes, TLDG is safe and feasible as well as LADG. Moreover, compared with LADG, TLDG can reduce intraoperative EBL and postoperative pain and enhance the bowel motility in gastric cancer surgery.

关键词： Distal gastrectomy gastric cancer intracorporeal anastomosis laparoscopic surgery

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Current status and challenges in sentinel node navigation surgery for early gastric cancer

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Chinese Journal of Cancer Research 2017年第2期29卷 93-99页

作者： bang wool eom Young-II Kim Hong Man Yoon Soo-Jeong Cho Jong Yeul Lee Chan GyooKim Soo Jin Kim Ji Yoon Rho Seok Ki Kim Myeong-Cherl Kook Young-Woo Kim Keun Won center for gastric cancer national cancer centerrepublic of korea center for diagnostic oncology national cancer centerrepublic of korea

Although a number of feasibility studies for sentinel node （SN） concepts in gastric cancer have been conducted since 2000, there remains a debate regarding detailed detection techniques and oncological safety. Two important multicenter phase II clinical trials were performed in Japan that used different methods and reached different conclusions; one confirmed acceptable results with a false-negative rate of 7%, and the other showed an unacceptably high false-negative rate of 46.4%. The Sentinel Node Oriented Tailored Approach （SENORITA） trial is a multicenter randomized controlled phase 1/I trial being performed in Korea. Patient enrollment is now complete and the long-term results are currently awaited. Recently, an image-guided SN mapping technique using infrared ray/fluorescence was introduced. This method might be a promising technology because it allows the clear visualization of SNs. With regard to the primary tumor, the non-exposed endoscopic wall-inversion surgery technique and non-exposure endolaparoscopic full-thickness resection with simple suturing technique have been reported. These methods prevent abdominal infection and tumor seeding and can be good alternatives to conventional laparoscopic gastric wedge resection. For indications, SN navigation surgery can be extended to patients who underwent non-curative endoscopic resection. Although a few studies have been performed on these patients, sentinel concepts may be beneficial to patients as they omit the need for additional gastrectomy. SN navigation surgery can lead to actual organ-preserving surgery and plays a key role in improving the quality of life of patients with early gastric cancer in the future.

关键词： Sentinel node navigation surgery early gastric cancer SENORITA

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Gastric choriocarcinoma admixed with an α-fetoprotein-producing adenocarcinoma and separated adenocarcinoma

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World Journal of Gastroenterology 2009年第40期15卷 5106-5108页

作者： bang wool eom So-Youn Jung Hongman Yoon Myeong-Cherl Kook Keun Won Ryu Jun Ho Lee Young-Woo Kim Center for Gastric Cancer National Cancer Center

We report a case of gastric choriocarcinoma admixed with an α-fetoprotein (AFP)-producing adeno-carcinoma. A 70-year-old man was hospitalized for gastric cancer that was detected during screening by esophagogastroduodenoscopy (EGD). Initial laboratory data showed the increased serum level of AFP and EGD revealed a 5-cm ulcerofungating mass in the greater curvature of the gastric antrum. The patient underwent radical subtotal gastrectomywith D2 lymph node dissection and Billroth gastrojejunostomy. Histopathological evaluation confirmed double primary gastric cancer: gastric choriocarcinoma admixed with an AFP-producing adenocarcinoma and separated adenocarcinoma. At 2 wk postoperatively, his human chorionic gonadotropin and AFP levels had reduced and six cycles of adjuvant chemotherapy were initiated. No recurrence or distant metastasis was observed at 4 years postoperatively.

关键词： α-fetoproteins Adenocarcinoma Choriocarcinoma Stomach neoplasms

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Improvement of diabetes and hypertension after gastrectomy: A nationwide cohort study

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World Journal of Gastroenterology 2015年第4期21卷 1173-1181页

作者： Eun Kyung Lee So Young Kim You Jin Lee Mi Hyang Kwak Hak Jin Kim Il Ju Choi Soo-Jeong Cho Young Woo Kim Jong Yeul Lee Chan Gyoo Kim Hong Man Yoon bang wool eom Sun-Young Kong Min Kyong Yoo Jong Hyock Park Keun Won Ryu Department of Internal Medicine National Cancer CenterGoyang 410-769South Korea College of Medicine/Graduate School of Health Science Business ConvergenceChungbuk National UniversityCheongju 361-763South Korea Department of Surgery National Cancer CenterGoyang 410-769South Korea Department of Laboratory Medicine National Cancer CenterGoyang 410-769South Korea Department of Clinical Nutrition National Cancer CenterGoyang 410-769South Korea

AIM: To evaluate the effect of gastrectomy on diabetes mellitus(DM) and hypertension(HTN) in non-obese gastric cancer patients. METHODS: A total of 100000 patients, diagnosed with either type 2 DM or HTN, were randomly selected from the 2004 Korean National Health Insurance System claims. Among them, 360 diabetes and 351 hypertensive patients with gastric cancer who had been regularly treated without chemotherapy from January 2005 to December 2010 were selected. They were divided into three groups according to their treatment methods: total gastrectomy(TG), subtotal gastrectomy(STG) and endoscopic resection(ER). RESULTS: The drug discontinuation rate of antidiabetic and anti-hypertensive agents after gastric cancer treatment was 9.7% and 11.1% respectively. DM appeared to be improved more frequently(22.8%) and earlier(mean ± SE 28.6 ± 1.8 mo) in TG group than in the two other groups [improved in 9.5% of ER group(37.4 ± 1.1 mo) and 6.4% of STG group(47.0 ± 0.8 mo)]. The proportion of patients treated with multiple drugs decreased more notably in TG group compared to others(P = 0.001 in DM, and P = 0.035 in HTN). In TG group, adjusted hazard ratio for theimprovement of DM was 2.87(95%CI: 1.15-7.17) in a multi-variate analysis and better control of DM was observed with survival analysis(P < 0.001).CONCLUSION: TG was found to decrease the need for anti-diabetic medications which can be reflective of improved glycemic control, to a greater extent than either ER or STG in non-obese diabetic patients.

关键词： Diabetes Hypertension Gastrectomy Gastric cancer N

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