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第六次全国大肠癌会议暨中日韩大肠癌会议

作者： Seok-Hwan Lee Tae-Young Kim choong yoon Hoong-Zae Joo yoon-Wha Kim Kee-Hyung Lee M.D. Department of Surgery and Pathology Kyung-Hee University Hospital Seoul Korea M.D. Department of Surgery and Pathology Kyung-Hee University Hospital Seoul Korea M.D. Department of Surgery and Pathology Kyung-Hee University Hospital Seoul Korea M.D. Department of Surgery and Pathology Kyung-Hee University Hospital Seoul Korea M.D. Department of Surgery and Pathology Kyung-Hee University Hospital Seoul Korea M.D. Department of Surgery and Pathology Kyung-Hee University Hospital Seoul Korea

＜正＞Purpose : One of the most important prognostic factors in colorectal cancer is lymph node metastasis, which predicts a reduced survival time. Although lymph node metastases were not detected by a conventional hematoxylin-eosin stain technique, 20 to 30 percent of patients fail long-term survival on account of a local or systemic recurrence. Recurrent disease in these patients is believed to develop from occult tumor in lymph nodes. We have conducted an immunohistochemical study with two different antibodies against cytokeratin to identify occult micrometastases in lymph nodes which were diagnosed as tumor negative by conventional histopathology.

关键词： Colorectal cancer Immunohistochemical study Lymph node metastases Occult micrometastases

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Dyna-QUF:Dyna-Q based univector field navigation for autonomous mobile robots in unknown environments

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Journal of Central South University 2013年第5期20卷 1178-1188页

作者： VIET Hoang-huu CHOI Seung-yoon CHUNG Tae-choong Department of Computer Engineering Kyung Hee University

A novel approach was presented to solve the navigation problem of autonomous mobile robots in unknown environments with dense obstacles based on a univector field method. In an obstacle-free environment, a robot is ensured to reach the goal position with the desired posture by following the univector field. Contrariwise, the univector field cannot guarantee that the robot will avoid obstacles in environments. In order to create an intelligent mobile robot being able to perform the obstacle avoidance task while following the univector field, Dyna-Q algorithm is developed to train the robot in learning moving directions to attain a collision-free path for its navigation. Simulations on the computer as well as experiments on the real world prove that the proposed algorithm is efficient for training the robot in reaching the goal position with the desired final orientation.

关键词： Dyna-Q mobile robot reinforcement learning univector field

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Impact of tumor location on clinical outcomes of gastric endoscopic submucosal dissection

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World Journal of Gastroenterology 2014年第26期20卷 8631-8637页

作者： Ji Young yoon choong Nam Shim Sook Hee Chung Wan Park Hyunsoo Chung Hyuk Lee Sung Kwan Shin Sang Kil Lee Yong Chan Lee Jun Chul Park Department of Internal Medicine Institute of GastroenterologyYonsei University College of Medicine

AIM: To determine whether there is a correlation between the location of the lesion and endoscopic submucosal dissection (ESD) outcome.

关键词： Endoscopic submucosal dissection Gastric neoplasm Location Complication Outcomes

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Toothpick impaction with sigmoid colon pseudodiverticulum formation successfully treated with colonoscopy

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World Journal of Gastroenterology 2008年第6期14卷 948-950页

作者： Youn Son Chung Yong Woo Chung Sun You Moon Su Mi yoon Min-Jeong Kim Kyoung Oh Kim Cheol Hee Park Taeho Hahn Kyo-Sang Yoo Sang Hoon Park Jong Hyeok Kim choong Kee Park Department of Gastroenterology Hallym University College of Medicine Anyang Korea Department of Radiology Hallym University College of Medicine Anyang Korea

Foreign bodies in the colon are encountered with increasing frequency, but only sporadic reports concerning their management have appeared in the literature. While most ingested foreign bodies usually pass through the gastrointestinal tract uneventfully, sharp foreign bodies such as toothpicks infrequently cause intestinal perforation and may even result in death. We report our experience with a patient with a sigmoid colon pseudodiverticulum formation, a complication of accidental ingestion of a toothpick that was diagnosed and successfully managed colonoscopically.

关键词： Toothpick Colon Colonoscopy Pseudodiverticulum

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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）

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Chinese Medical Journal 2018年第14期131卷 1645-1651页

作者： 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 Department of Internal Medicine Hanyang University Seoul Hospital Hanyang University Seou104763 Korea Department of Internal Medicine Nowon Eulji Hospital Eulji University Seou101830 Korea Department of Internal Medicine Hanyang University Guri Hospital Hanyang University Guri 11923 Korea Department of Internal Medicine SoonChunHyang University Bucheon Hospital SoonChunHyang University Bucheon 14584 Korea Department of Internal Medicine SoonChunHyang University Cheonan Hospital SoonChunHyang University Cheonan 31151 Korea Department of Internal Medicine Kyung Hee University Hospital Kyung Hee University Seoul 02453 Korea Department of Internal Medicine Chuncheon Sacred Heart Hospital Hallym University Chuncheon 24252 Korea Department of Internal Medicine Kangdong Sacred Heart Hospital Hallym University Seou105355 Korea Department of Internal Medicine Gangnam Severance Hospital Yonsei University Seou106273 Korea Department of Internal Medicine CHA Bundang Medical Center CHA University Seongnam 13496 Korea Department of Internal Medicine Sanggye Paik Hospital Inje University Seoul 01757 Korea Department of Internal Medicine Kyungpook National University Hospital Kyungpook National University Daegu 41944 Korea Department of Internal Medicine Yeungnam University Medical Center Yeungnam University Daegu 42415 Korea Department of Internal Medicine Pusan National University Yangsan Hospital Pusan National University Yangsan 50612 Korea Department of Internal Medicine Kosin University Gospel Hospital Kosin University Pusan 49267 Korea Department of Internal Medicine Dong A University Medical Center Dong A University Pusan 49201 Korea Department of Internal Medicine Wonju Severance Christian Hospital Yonsei University Wonju 26426 Korea Department of Internal Medicine Haeundae Paik Hospital Inje University Pusan 48108 Korea Department of Internal Medicine Hallym University Sacred Heart Hospital Hallym University Anyang 14068 Korea Department of Cli

Background： Until now, various types of combined therapy with nucleotide analogs and pegylated interferon （Peg-INF） in patients with hepatitis B patients have been tried. Howe6ver, studies regarding the benefits of de novo combination, late-add on, and sequential treatmentare very limited. The objective of the current study was to identify the efficacy of sequential treatment of Peg-INF after short-term antiviral treatment. Methods： Between June 2010 and June 2015, hepatitis 13 e antigen （HBeAg）-positive patients （n = 162） received Peg-IFN for 48 weeks （mono-treatment group, n = 81） and entecavir （ETV） for 12 weeks with a 48-week course of Peg-IFN starting at week 5 of ETV therapy （sequential treatment group, n = 81）. The primary endpoint was HBeAg seroconversion at the end of follow-up period after the 24-week treatment. The primary endpoint was analyzed using Chi-square test, Fisher＇s exact test, and regression ***： HBeAg seroconversion rate （18.2% vs. 18.2%, t = 0.03, P = 1.000） and seroclearance rate （19.7% vs. 19.7%, t = 0.03, P = 1.000） were same in both mono-treatment and sequential treatment groups. The rate of alanine aminotransferase （ALT） normalization （45.5% vs. 54.5%, t = 1.12, P = 0.296） and serum hepatitis B virus （HBV）-DNA 〈2000 U/L （28.8% vs. 28.8%, t = 0.10, P = 1.000） was not different in sequential and mono-treatment groups at 24 weeks of Peg-INF. Viral response rate （HBeAg seroconversion and serum HBV-DNA 〈2000 U/L） was not different in the two groups （12.1% vs. 16.7%, t = 1.83, P = 0.457）. Baseline HBV-DNA level （7 log10 U/ml vs. 7.5 log10 U/ml, t = 1.70, P = 0.019） and hepatitis B surface antigen titer （3.6 log10 U/ml vs. 4.0 log10 U/ml, t = 2.19, P = 0.020） were lower and predictors of responder in mono-treatment and sequential treatment groups, respectively. Conclusions： The current study shows no differences in HBeAg seroconversion rate, ALT normalization, and HBV-DNA levels between mono-therapy and sequential therapy regimens.

关键词： Entecavir Hepatitis B Peginterferon Alfa-2a

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