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Does statin have a chemopreventive effect in patients with ulcerative colitis?
Yoon Suk Jung
Intest Res 2025;23(2):113-114.   Published online April 29, 2025
DOI: https://doi.org/10.5217/ir.2025.00048
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Review
Colorectal neoplasia
Summary and comparison of recently updated post-polypectomy surveillance guidelines
Yoon Suk Jung
Intest Res 2023;21(4):443-451.   Published online October 26, 2023
DOI: https://doi.org/10.5217/ir.2023.00107
AbstractAbstract PDFPubReaderePub
Recently, updated guidelines for post-polypectomy surveillance have been published by the U.S. Multi‐Society Task Force (USMSTF), the British Society of Gastroenterology/Association of Coloproctology of Great Britain and Ireland/Public Health England (BSG/ACPGBI/PHE), the European Society of Gastrointestinal Endoscopy (ESGE), the Japan Gastroenterological Endoscopy Society (JGES), and the Korean Multi-Society Taskforce Committee. This review summarizes and compares the updated recommendations of these 5 guidelines. There are some differences between the guidelines for the recommended post-polypectomy surveillance intervals. In particular, there are prominent differences between the guidelines for 1–4 tubular adenomas < 10 mm with low-grade dysplasia (nonadvanced adenomas [NAAs]) and tubulovillous or villous adenomas. The USMSTF, JGES, and Korean guidelines recommend colonoscopic surveillance for patients with 1–4 NAAs and those with tubulovillous or villous adenomas, whereas the BSG/ACPGBI/PHE and ESGE guidelines do not recommend endoscopic surveillance for such patients. Surveillance recommendations for patients with serrated polyps (SPs) are limited. Although the USMSTF guidelines provide specific recommendations for patients who have undergone SPs removal, these are weak and based on very lowquality evidence. Future studies should examine this topic to better guide the surveillance recommendations for patients with SPs. For countries that do not have separate guidelines, we hope that this review article will help select the most appropriate guidelines as per each country’s healthcare environment.

Citations

Citations to this article as recorded by  
  • Influence of Lifestyles on Polyp Burden and Cancer Development in Hereditary Colorectal Cancer Syndromes
    Hye Kyung Hyun, Ji Soo Park, Jihye Park, Soo Jung Park, Jae Jun Park, Jae Hee Cheon, Tae Il Kim
    Journal of Gastroenterology and Hepatology.2025; 40(2): 433.     CrossRef
  • Frequency and Risk Factors of Advanced Neoplasia in Korean Inflammatory Bowel Disease Patients with Low-grade Dysplasia
    Yong Eun Park, Kyeong Ok Kim, Dong Hyun Kim, Soo-Kyung Park, Yoo Jin Lee, Chang Kyun Lee
    The Korean Journal of Gastroenterology.2025; 85(1): 34.     CrossRef
  • The impact of COVID-19 on clinical practices of colorectal cancer in South Korea
    Kwang Woo Kim, Hyoun Woo Kang
    Intestinal Research.2025; 23(1): 6.     CrossRef
  • Annual Blood Tests Are an Acceptable form of Surveillance to Supplement Colonoscopies for Colorectal Cancer
    Rishabh Goyal, Carlene J. Wilson, Ingrid H. Flight, Charles Cock, Graeme P. Young, Molla M. Wassie, Sarah Cohen-Woods, Erin L. Symonds, Maddison Dix
    Digestive Diseases and Sciences.2025; 70(4): 1486.     CrossRef
  • Assessing Patient Preferences and Response to Extended Colonoscopy Intervals in a Colorectal Cancer Surveillance Program
    Maddison Dix, Syme Aftab, Graeme P. Young, Carlene J. Wilson, Kalindra Simpson, Charles Cock, Erin L. Symonds
    Digestive Diseases and Sciences.2025; 70(4): 1328.     CrossRef
  • Developing a Strategy for Prevention of Avoidable Postcolonoscopy Colorectal Cancers: Current and Future Perspectives
    Nanette S. Van roermund, Joep E.G. Ijspeert, Evelien Dekker
    Gastroenterology.2025; 168(5): 854.     CrossRef
  • Causal association between telomere length and colorectal polyps: A bidirectional two-sample Mendelian randomization study
    Yin Zhang, Jiaying Wang, Mingyu Zheng, Huanwei Qu, Shuya Yang, Fuzhou Han, Nan Yao, Wenqiang Li, Jun Qu
    Medicine.2024; 103(1): e36867.     CrossRef
  • Screening and surveillance for hereditary colorectal cancer
    Hee Man Kim, Tae Il Kim
    Intestinal Research.2024; 22(2): 119.     CrossRef
  • Screening and Surveillance of Colorectal Cancer: A Review of the Literature
    Marcello Maida, Dushyant Singh Dahiya, Yash R. Shah, Angad Tiwari, Harishankar Gopakumar, Ishaan Vohra, Aqsa Khan, Fouad Jaber, Daryl Ramai, Antonio Facciorusso
    Cancers.2024; 16(15): 2746.     CrossRef
  • 3,915 View
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  • 10 Web of Science
  • 9 Crossref
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Original Article
Colorectal neoplasia
Development and validation of a scoring system for advanced colorectal neoplasm in young Korean subjects less than age 50 years
Ji Yeon Kim, Sungkyoung Choi, Taesung Park, Seul Ki Kim, Yoon Suk Jung, Jung Ho Park, Hong Joo Kim, Yong Kyun Cho, Chong Il Sohn, Woo Kyu Jeon, Byung Ik Kim, Kyu Yong Choi, Dong Il Park
Intest Res 2019;17(2):253-264.   Published online November 20, 2018
DOI: https://doi.org/10.5217/ir.2018.00062
AbstractAbstract PDFPubReaderePub
Background/Aims
Colorectal cancer incidence among patients aged ≤50 years is increasing. This study aimed to develop and validate an advanced colorectal neoplasm (ACRN) screening model for young adults aged <50 years in Korea.
Methods
This retrospective cross-sectional study included 59,575 consecutive asymptomatic Koreans who underwent screening colonoscopy between 2003 and 2012 at a single comprehensive health care center. Young Adult Colorectal Screening (YCS) score was developed as an optimized risk stratification model for ACRN using multivariate analysis and was internally validated. The predictive power and diagnostic performance of YCS score was compared with those of Asia-Pacific Colorectal Screening (APCS) and Korean Colorectal Screening (KCS) scores.
Results
41,702 and 17,873 subjects were randomly allocated into the derivation and validation cohorts, respectively, by examination year. ACRN prevalence was 0.9% in both cohorts. YCS score comprised sex, age, alcohol, smoking, obesity, glucose metabolism abnormality, and family history of CRC, with score ranges of 0 to 10. In the validation cohort, ACRN prevalence was 0.6% in the low-risk tier (score, 0–4), 1.5% in the moderate-risk tier (score, 5–7), and 3.4% in the high-risk tier (score, 8–10). ACRN risk increased 2.5-fold (95%CI, 1.8–3.4) in the moderate-risk tier and 5.8-fold (95%CI, 3.4–9.8) in the high-risk tier compared with the low-risk tier. YCS score identified better balanced accuracy (53.9%) than APCS (51.5%) and KCS (50.7%) scores and had relatively good discriminative power (area under the curve=0.660).
Conclusions
YCS score based on clinical and laboratory risk factors was clinically effective and beneficial for predicting ACRN risk and targeting screening colonoscopy in adults aged <50 years.

Citations

Citations to this article as recorded by  
  • Response to commentaries on “Performance of the Asia‐Pacific colorectal screening score in stratifying the risk of advanced colorectal neoplasia: A meta‐analysis and systematic review”
    MN Luu, DT Quach
    Journal of Gastroenterology and Hepatology.2025; 40(1): 337.     CrossRef
  • Family History of Colorectal Cancer and the Risk of Colorectal Neoplasia: A Systematic Review and Meta-Analysis
    Kai Gao, Huyi Jin, Yi Yang, Jiayu Li, Yuanliang He, Ruiyao Zhou, Wanting Zhang, Xiangrong Gao, Zongming Yang, Mengling Tang, Jianbing Wang, Ding Ye, Kun Chen, Mingjuan Jin
    American Journal of Gastroenterology.2025; 120(3): 531.     CrossRef
  • Development and Internal Validation of a Machine Learning-Based Colorectal Cancer Risk Prediction Model
    Deborah Jael Herrera, Daiane Maria Seibert, Karen Feyen, Marlon van Loo, Guido Van Hal, Wessel van de Veerdonk
    Gastrointestinal Disorders.2025; 7(2): 26.     CrossRef
  • Performance of the Asia–Pacific Colorectal Screening score in stratifying the risk of advanced colorectal neoplasia: A meta‐analysis and systematic review
    Mai Ngoc Luu, Nhi Ai Trinh, Truc Le Thanh Tran, Thinh Phuong Dang, Toru Hiyama, Duc Trong Quach
    Journal of Gastroenterology and Hepatology.2024; 39(6): 1000.     CrossRef
  • Updated epidemiology of gastrointestinal cancers in East Asia
    Junjie Huang, Don Eliseo Lucero-Prisno, Lin Zhang, Wanghong Xu, Sunny H. Wong, Siew C. Ng, Martin C. S. Wong
    Nature Reviews Gastroenterology & Hepatology.2023; 20(5): 271.     CrossRef
  • From Algorithms to Clinical Utility: A Systematic Review of Individualized Risk Prediction Models for Colorectal Cancer
    Deborah Jael Herrera, Wessel van de Veerdonk, Daiane Maria Seibert, Moges Muluneh Boke, Claudia Gutiérrez-Ortiz, Nigus Bililign Yimer, Karen Feyen, Allegra Ferrari, Guido Van Hal
    Gastrointestinal Disorders.2023; 5(4): 549.     CrossRef
  • Emergence of a New Optical Marker for Colorectal Neoplasms: To What Extent Should We Accept It?
    Han Hee Lee
    Clinical Endoscopy.2022; 55(2): 315.     CrossRef
  • Is early-onset cancer an emerging global epidemic? Current evidence and future implications
    Tomotaka Ugai, Naoko Sasamoto, Hwa-Young Lee, Mariko Ando, Mingyang Song, Rulla M. Tamimi, Ichiro Kawachi, Peter T. Campbell, Edward L. Giovannucci, Elisabete Weiderpass, Timothy R. Rebbeck, Shuji Ogino
    Nature Reviews Clinical Oncology.2022; 19(10): 656.     CrossRef
  • Strategies for colorectal cancer screening and post-polypectomy surveillance for young adults under age 50
    Yoon Suk Jung
    Precision and Future Medicine.2021; 5(2): 69.     CrossRef
  • How to Choose the Optimal Bowel Preparation Regimen for Colonoscopy
    Ji Eun Na, Eun Ran Kim
    The Ewha Medical Journal.2021; 44(4): 122.     CrossRef
  • The Role of Diet and Lifestyle in Early-Onset Colorectal Cancer: A Systematic Review
    Marta Puzzono, Alessandro Mannucci, Simone Grannò, Raffaella Alessia Zuppardo, Andrea Galli, Silvio Danese, Giulia Martina Cavestro
    Cancers.2021; 13(23): 5933.     CrossRef
  • Association between waist circumference and risk of colorectal neoplasia in normal‐weight adults
    Yoon Suk Jung, Nam Hee Kim, Hyo‐Joon Yang, Soo‐Kyung Park, Jung Ho Park, Dong Il Park, Chong Il Sohn
    Journal of Gastroenterology and Hepatology.2020; 35(1): 43.     CrossRef
  • Risk prediction rule for advanced neoplasia on screening colonoscopy for average-risk individuals
    Ala I Sharara, Ali El Mokahal, Ali H Harb, Natalia Khalaf, Fayez S Sarkis, Mustapha M El-Halabi, Nabil M Mansour, Ahmad Malli, Robert Habib
    World Journal of Gastroenterology.2020; 26(37): 5705.     CrossRef
  • Risk Factors Associated With Young-Onset Colorectal Adenomas and Cancer: A Systematic Review and Meta-Analysis of Observational Research
    Genevieve Breau, Ursula Ellis
    Cancer Control.2020;[Epub]     CrossRef
  • Prevalence and risk factors of colorectal cancer in Asia
    Martin CS Wong, Hanyue Ding, Jingxuan Wang, Paul SF Chan, Junjie Huang
    Intestinal Research.2019; 17(3): 317.     CrossRef
  • 9,327 View
  • 166 Download
  • 13 Web of Science
  • 15 Crossref
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Letters to the Editor
Is colorectal cancer screening necessary before 50 years of age?
Yoon Suk Jung
Intest Res 2017;15(4):550-551.   Published online October 23, 2017
DOI: https://doi.org/10.5217/ir.2017.15.4.550
PDFPubReaderePub

Citations

Citations to this article as recorded by  
  • Colorectal cancer screening guidelines for average-risk and high-risk individuals: A systematic review
    Caroline Tanadi, Kevin Tandarto, Maureen Miracle Stella, Kenny Wijaya Sutanto, Mario Steffanus, Riki Tenggara, Muhammad Begawan Bestari
    Romanian Journal of Internal Medicine.2024; 62(2): 101.     CrossRef
  • Prevalence and risk of colorectal polyps among the Korean population under 50 years
    Su Jin Jeong, Jinho Lee, Eunju Kim, Jun Seong Hwang, Jin Lee, Joon Hyuk Choi, Nae-Yun Heo, Jongha Park, Seung Ha Park, Tae Oh Kim, Yong Eun Park
    Medicine.2022; 101(27): e29493.     CrossRef
  • Optimization of the surveillance strategy in patients with colorectal adenomas: A combination of clinical parameters and index colonoscopy findings
    Chan Hyuk Park, Yoon Suk Jung, Nam Hee Kim, Jung Ho Park, Dong Il Park, Chong Il Sohn
    Journal of Gastroenterology and Hepatology.2021; 36(4): 974.     CrossRef
  • Colorectal Cancer among Resettlers from the Former Soviet Union and in the General German Population: Clinical and Pathological Characteristics and Trends
    Melani Ratih Mahanani, Simone Kaucher, Hiltraud Kajüter, Bernd Holleczek, Heiko Becher, Volker Winkler
    International Journal of Environmental Research and Public Health.2021; 18(9): 4547.     CrossRef
  • Association between waist circumference and risk of colorectal neoplasia in normal‐weight adults
    Yoon Suk Jung, Nam Hee Kim, Hyo‐Joon Yang, Soo‐Kyung Park, Jung Ho Park, Dong Il Park, Chong Il Sohn
    Journal of Gastroenterology and Hepatology.2020; 35(1): 43.     CrossRef
  • Prevalence of and Risk Factors for Colorectal Neoplasia in Asymptomatic Young Adults (20–39 Years Old)
    Nam Hee Kim, Yoon Suk Jung, Hyo-Joon Yang, Soo-Kyung Park, Jung Ho Park, Dong Il Park, Chong Il Sohn
    Clinical Gastroenterology and Hepatology.2019; 17(1): 115.     CrossRef
  • Impact of family history of colorectal cancer on age‐specific prevalence of colorectal neoplasia
    Chan Hyuk Park, Nam Hee Kim, Jung Ho Park, Dong Il Park, Chong Il Sohn, Yoon Suk Jung
    Journal of Gastroenterology and Hepatology.2019; 34(3): 537.     CrossRef
  • Frequency of I655V SNP of HER-2/neu in colorectal cancer: a study from India
    Rameez Hasan, Deepti Bhatt, Shahbaz Khan, Vasiuddin Khan, Amit Kumar Verma, Prahalad Singh Bharti, Afzal Anees, Kapil Dev
    3 Biotech.2019;[Epub]     CrossRef
  • Appropriate Surveillance Interval after Colonoscopic Polypectomy in Patients Younger than 50 Years
    Yoon Suk Jung, Nam Hee Kim, Jung Ho Park, Dong Il Park, Chong Il Sohn
    Journal of Korean Medical Science.2019;[Epub]     CrossRef
  • Analysis of population‐based colorectal cancer screening in Guangzhou, 2011‐2015
    Feng Zhiqiang, Cao Jie, Nie Yuqiang, Gong Chenghua, Wang Hong, Sun Zheng, Li Wanglin, Zhou Yongjian, Dai Liping, Zeng Lizhong, Zhao DeJian
    Cancer Medicine.2019; 8(5): 2496.     CrossRef
  • Risk of Developing Metachronous Advanced Colorectal Neoplasia After Polypectomy in Patients With Multiple Diminutive or Small Adenomas
    Nam Hee Kim, Yoon Suk Jung, Mi Yeon Lee, Jung Ho Park, Dong Il Park, Chong Il Sohn
    American Journal of Gastroenterology.2019; 114(10): 1657.     CrossRef
  • Association between family history of colorectal cancer and the risk of metachronous colorectal neoplasia following polypectomy in patients aged < 50 years
    Nam Hee Kim, Yoon Suk Jung, Jung Ho Park, Dong Il Park, Chong Il Sohn
    Journal of Gastroenterology and Hepatology.2019; 34(2): 383.     CrossRef
  • Adenoma Detection before and after the age of 50: a retrospective analysis of Lebanese outpatients
    Mohammed Hussein Kamareddine, Youssef Ghosn, Karam Karam, Anwar Andrew Nader, Ahmad El-Mahmoud, Naseem Bou-Ayash, Mansour El-Khoury, Said Farhat
    BMJ Open Gastroenterology.2018; 5(1): e000253.     CrossRef
  • Optimal Starting Age for Colorectal Cancer Screening in an Era of Increased Metabolic Unhealthiness: A Nationwide Korean Cross-Sectional Study
    Yoon Jin Choi, Dong Ho Lee, Kyung-Do Han, Hyun Soo Kim, Hyuk Yoon, Cheol Min Shin, Young Soo Park, Nayoung Kim
    Gut and Liver.2018; 12(6): 655.     CrossRef
  • 5,372 View
  • 60 Download
  • 14 Web of Science
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Original Articles
Is methylation analysis of SFRP2, TFPI2, NDRG4, and BMP3 promoters suitable for colorectal cancer screening in the Korean population?
Soo-Kyung Park, Hae Lim Baek, Junghee Yu, Ji Yeon Kim, Hyo-Joon Yang, Yoon Suk Jung, Kyu Yong Choi, Hungdai Kim, Hyung Ook Kim, Kyung Uk Jeong, Ho-Kyung Chun, Kyungeun Kim, Dong Il Park
Intest Res 2017;15(4):495-501.   Published online October 23, 2017
DOI: https://doi.org/10.5217/ir.2017.15.4.495
AbstractAbstract PDFPubReaderePub
<b>Background/Aims</b><br/>

Colorectal cancer (CRC) screening using stool DNA was recently found to yield good detection rates. A multi-target stool DNA test (Cologuard®, Exact Sciences), including methylated genes has been recently approved by the U.S. Food and Drug Administration. The aim of this study was to validate these aberrantly methylated genes as stool-based DNA markers for detecting CRC and colorectal advanced adenoma (AA) in the Korean population.

Methods

A single-center study was conducted in 36 patients with AA; 35 patients with CRC; and 40 endoscopically diagnosed healthy controls using CRC screening colonoscopy. The methylation status of the SFRP2, TFPI2, NDRG4, and BMP3 promoters was investigated blindly using bisulfate-modified stool DNA obtained from 111 participants. Methylation status was investigated by methylation-specific polymerase chain reaction.

Results

Methylated SFRP2, TFPI2, NDRG4, and BMP3 promoters were detected in 60.0%, 31.4%, 68.8%, and 40.0% of CRC samples and in 27.8%, 27.8%, 27.8%, and 33.3% of AA samples, respectively. The sensitivities obtained using 4 markers to detect CRC and AA were 94.3% and 72.2%, respectively. The specificity was 55.0%.

Conclusions

Our results demonstrate that the SFRP2, TFPI2, NDRG4, and BMP3 promoter methylation analysis of stool sample DNA showed high sensitivity but low specificity for detecting CRC and AA. Because of the low specificity, 4 methylated markers might not be sufficient for CRC screening in the Korean population. Further large-scale studies are required to validate the methylation of these markers in the Asian population and to find new markers for the Asian population.

Citations

Citations to this article as recorded by  
  • Effectiveness of single-target fecal DNA methylation test in regional mass screening for colorectal cancer and precancerous lesions in China
    Xianhe Kong, Qiuning Wu, Zhi Zhang, Zhiqiang Yu, Feng Niu, Xianshu Wang, Hongzhi Zou
    Gastroenterology Report.2025;[Epub]     CrossRef
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    Jingxin Ye, Jianfeng Zhang, Weifeng Ding
    Exploration of Targeted Anti-tumor Therapy.2024; 5(1): 34.     CrossRef
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    Chang Kyo Oh, Young-Seok Cho
    Intestinal Research.2024; 22(2): 131.     CrossRef
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    Marek Z. Wojtukiewicz, Marta Mysliwiec, Anna Tokajuk, Joanna Kruszewska, Barbara Politynska, Anmbreen Jamroze, Anna M. Wojtukiewicz, Dean G. Tang, Kenneth V. Honn
    Cancer and Metastasis Reviews.2024; 43(4): 1185.     CrossRef
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    Yudith Annisa Ayu Rezkitha, Nur Syahadati Retno Panenggak, Maria Inge Lusida, Raissa Virgy Rianda, Isna Mahmudah, Aditya Doni Pradana, Tomohisa Uchida, Muhammad Miftahussurur
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  • Hypermethylated Promoters of Secreted Frizzled-Related Protein Genes are Associated with Colorectal Cancer
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  • BMP3 promoter hypermethylation in plasma-derived cell-free DNA in colorectal cancer patients
    Parisa Rokni, Afsaneh Mojtabanezhad Shariatpanahi, Ebrahim Sakhinia, Mohammad Amin Kerachian
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    Gut and Liver.2018; 12(5): 479.     CrossRef
  • 7,281 View
  • 99 Download
  • 28 Web of Science
  • 27 Crossref
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Miss rate of colorectal neoplastic polyps and risk factors for missed polyps in consecutive colonoscopies
Nam Hee Kim, Yoon Suk Jung, Woo Shin Jeong, Hyo-Joon Yang, Soo-Kyung Park, Kyuyong Choi, Dong Il Park
Intest Res 2017;15(3):411-418.   Published online June 12, 2017
DOI: https://doi.org/10.5217/ir.2017.15.3.411
AbstractAbstract PDFPubReaderePub
<b>Background/Aims</b><br/>

Colonoscopic polypectomy is the best diagnostic and therapeutic tool to detect and prevent colorectal neoplasms. However, previous studies have reported that 17% to 28% of colorectal polyps are missed during colonoscopy. We investigated the miss rate of neoplastic polyps and the factors associated with missed polyps from quality-adjusted consecutive colonoscopies.

Methods

We reviewed the medical records of patients who were found to have colorectal polyps at a medical examination center of the Kangbuk Samsung Hospital between March 2012 and February 2013. Patients who were referred to a single tertiary academic medical center and underwent colonoscopic polypectomy on the same day were enrolled in our study. The odds ratios (ORs) associated with polyp-related and patient-related factors were evaluated using logistic regression analyses.

Results

A total of 463 patients and 1,294 neoplastic polyps were analyzed. The miss rates for adenomas, advanced adenomas, and carcinomas were 24.1% (312/1,294), 1.2% (15/1,294), and 0% (0/1,294), respectively. Flat/sessile-shaped adenomas (adjusted OR, 3.62; 95% confidence interval [CI], 2.40–5.46) and smaller adenomas (adjusted OR, 5.63; 95% CI, 2.84– 11.15 for ≤5 mm; adjusted OR, 3.18; 95% CI, 1.60–6.30 for 6–9 mm, respectively) were more frequently missed than pedunculated/sub-pedunculated adenomas and larger adenomas. In patients with 2 or more polyps compared with only one detected (adjusted OR, 2.37; 95% CI, 1.55–3.61 for 2–4 polyps; adjusted OR, 11.52; 95% CI, 4.61–28.79 for ≥5 polyps, respectively) during the first endoscopy, the risk of missing an additional polyp was significantly higher.

Conclusions

One-quarter of neoplastic polyps was missed during colonoscopy. We encourage endoscopists to detect smaller and flat or sessile polyps by using the optimal withdrawal technique.

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    Gastroenterology Research and Practice.2018; 2018: 1.     CrossRef
  • Molecular Imaging of Colorectal Tumors by Targeting Colon Cancer Secreted Protein-2 (CCSP-2)
    Jaeil Kim, Eun-ju Do, Helen Moinova, Sang Mun Bae, Ja Young Kang, Seung-Mo Hong, Stephen P. Fink, Jinmyoung Joo, Young-Ah Suh, Se Jin Jang, Sung Wook Hwang, Sang Hyoung Park, Dong-Hoon Yang, Byong Duk Ye, Jeong-Sik Byeon, Jaewon Choe, Suk-Kyun Yang, Sanfo
    Neoplasia.2017; 19(10): 805.     CrossRef
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Comparison of the efficacy of disinfectants in automated endoscope reprocessors for colonoscopes: tertiary amine compound (Sencron2®) versus ortho-phthalaldehyde (Cidex®OPA)
Hyun Il Seo, Dae Sung Lee, Eun Mi Yoon, Min-Jung Kwon, Hyosoon Park, Yoon Suk Jung, Jung Ho Park, Chong Il Sohn, Dong Il Park
Intest Res 2016;14(2):178-182.   Published online April 27, 2016
DOI: https://doi.org/10.5217/ir.2016.14.2.178
AbstractAbstract PDFPubReaderePub
<b>Background/Aims</b><br/>

To prevent the transmission of pathogens by endoscopes, following established reprocessing guidelines is critical. An ideal reprocessing step is simple, fast, and inexpensive. Here, we evaluated and compared the efficacy and safety of two disinfectants, a tertiary amine compound (TAC) and ortho-phthalaldehyde (OPA).

Methods

A total of 100 colonoscopes were randomly reprocessed using two same automated endoscope reprocessors, according to disinfectant. The exposure time was 10 minutes for 0.55% OPA (Cidex® OPA, Johnson & Johnson) and 5 minutes for 4% TAC (Sencron2®, Bab Gencel Pharma & Chemical Ind. Co.). Three culture samples were obtained from each colonoscope after reprocessing.

Results

A total of nine samples were positive among the 300 culture samples. The positive culture rate was not statistically different between the two groups (4% for OPA and 2% for TAC, P=0.501). There were no incidents related to safety during the study period.

Conclusions

TAC was non-inferior in terms of reprocessing efficacy to OPA and was safe to use. Therefore, TAC seems to be a good alternative disinfectant with a relatively short exposure time and is also less expensive than OPA.

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  • What doesn’t kill biofilm, makes them stronger: critical methodological considerations for endoscope reprocessing
    R. Kanaujia, A. Sharma, M. Biswal, V. Singh
    Journal of Hospital Infection.2025; 156: 135.     CrossRef
  • Synthesis, Characterization and Investigation of Antimicrobial Activity of Orthophtaldehyde Nanoflowers
    Gülten CAN SEZGİN, Nilay ILDİZ
    Middle Black Sea Journal of Health Science.2023; 9(2): 245.     CrossRef
  • A Manufacturer and User Facility Device Experience Analysis of Upper Aerodigestive Endoscopy Contamination: Is Flexible Laryngoscopy Different?
    Roy Jiang, David A. Kasle, Faisal Alzahrani, Nikita Kohli, Michael Z. Lerner
    The Laryngoscope.2021; 131(3): 598.     CrossRef
  • Electrochemical and Spectrometric Study of Reactivity of Orthophthalaldehyde with Hydroxylamine: Mechanistic Considerations
    Joël Donkeng‐Dazie, Jiří Urban, Jiří Ludvík
    ChemistrySelect.2021; 6(20): 4881.     CrossRef
  • Reactivity of orthophthalaldehyde with aliphatic, alicyclic and aromatic primary diamines: Electrochemical study and mechanistic considerations
    Joël Donkeng Dazie, Alan Liška, Jiří Urban, Jiří Ludvík
    Journal of Electroanalytical Chemistry.2018; 821: 131.     CrossRef
  • Efficacy of Peracetic Acid (EndoPA®) for Disinfection of Endoscopes
    Ji Min Lee, Kang-Moon Lee, Dae Bum Kim, Se Eun Go, Sungwoo Ko, Yoongoo Kang, Solim Hong
    The Korean Journal of Gastroenterology.2018; 71(6): 319.     CrossRef
  • Planarity of substituted pyrrole and furan rings in (3R*, 1′S*, 3′R*)-3-(1′-tert-butylamino-1′H, 3′ H-benzo[c]furan-3′-yl)-2-tert-butyl-2,3-dihydro-1H-benzo[c]pyrrol-1-one
    Joel Donkeng Dazie, Alan Liška, Jiří Ludvík, Jan Fábry, Michal Dušek, Václav Eigner
    Zeitschrift für Kristallographie - Crystalline Materials.2017; 232(6): 441.     CrossRef
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The prevalence and clinical characteristics of anemia in Korean patients with inflammatory bowel disease
Dae Sung Lee, Ki Bae Bang, Ji Yeon Kim, Yoon Suk Jung, Jung Ho Park, Hong Joo Kim, Yong Kyun Cho, Chong Il Sohn, Woo Kyu Jeon, Byung Ik Kim, Kyu Young Choi, Dong Il Park
Intest Res 2016;14(1):43-49.   Published online January 26, 2016
DOI: https://doi.org/10.5217/ir.2016.14.1.43
AbstractAbstract PDFPubReaderePub
<b>Background/Aims</b><br/>

Quality of life is closely related to anemia in patients with inflammatory bowel disease (IBD). Several studies have reported on anemia in patients with IBD in Western countries. This study investigated the prevalence and clinical characteristics of anemia in Korean patients with IBD.

Methods

We reviewed the medical records of 92 patients with ulcerative colitis (UC) and 76 patients with Crohn's disease (CD) who were followed regularly at a single tertiary medical center in Korea between January 2003 and December 2012. Hemoglobin (Hb) thresholds used to define anemia were <13.0 g/dL in men and <12.0 g/dL in women according to the World Health Organization criteria. We chose the lowest Hb level in each year as a representative value because Hb levels changed at each examination and anemia was associated with disease deterioration. The relationship between clinical variables and lowest Hb level was assessed.

Results

The prevalence of anemia was 36.3% in patients with UC and 41.6% in patients with CD. Anemia in patients with CD was associated with hospital admission, 5-aminosalicylate (5-ASA) and infliximab treatment in men. Anemia in patients with UC was associated with hospital admission, oral steroid use, thiopurine and infliximab treatment in men.

Conclusions

The prevalence of anemia in Korean patients with IBD was comparable to that of patients in Western countries. Anemia was associated with male patients with CD who were admitted to the hospital and received medications including 5-ASA and infliximab, and men with UC who were admitted to the hospital and received medications including oral steroids, thiopurine and infliximab.

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  • Clinical characteristics and north-south differences of inflammatory bowel disease in China: A cross-sectional study and meta-analysis
    Qi Liang, Bo Qu, Chunye Li, Yue Hu, Chunyi Yang, Tingting Yang, Yuzhu Di, Hui Li
    Frigid Zone Medicine.2024; 4(1): 23.     CrossRef
  • Clinical and Laboratory Characteristics of Anaemia in Hospitalized Patients with Inflammatory Bowel Disease
    Małgorzata Woźniak, Anna Borkowska, Marta Jastrzębska, Marcin Sochal, Ewa Małecka-Wojciesko, Renata Talar-Wojnarowska
    Journal of Clinical Medicine.2023; 12(7): 2447.     CrossRef
  • Ferric carboxymaltose for anemia in Crohn’s disease patients at a tertiary center: A retrospective observational cohort study
    Natália Souza Nunes Siqueira, Livia Bitencourt Pascoal, Bruno Lima Rodrigues, Marina Moreira de Castro, Alan Sidnei Corrêa Martins, Dante Orsetti Silva Araújo, Luis Eduardo Miani Gomes, Michel Gardere Camargo, Maria de Lourdes Setsuko Ayrizono, Raquel Fra
    World Journal of Clinical Cases.2023; 11(12): 2740.     CrossRef
  • ANEMIA AND IRON DEFICIENCY IN INFLAMMATORY BOWEL DISEASE PATIENTS IN A REFERRAL CENTER IN BRAZIL: PREVALENCE AND RISK FACTORS
    Rogério Serafim PARRA, Marley Ribeiro FEITOSA, Sandro da Costa FERREIRA, José Joaquim Ribeiro da ROCHA, Luiz Ernesto de Almeida TRONCON, Omar FÉRES
    Arquivos de Gastroenterologia.2020; 57(3): 272.     CrossRef
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    Göksel Bengi, Hatice Keyvan, Seda Bayrak Durmaz, Hale Akpınar
    World Journal of Gastroenterology.2018; 24(36): 4186.     CrossRef
  • Nonimmunity against hepatitis B virus infection in patients newly diagnosed with inflammatory bowel disease
    Seong Jae Yeo, Hyun Seok Lee, Byung Ik Jang, Eun Soo Kim, Seong Woo Jeon, Sung Kook Kim, Kyeong Ok Kim, Yoo Jin Lee, Hyun Jik Lee, Kyung Sik Park, Yun Jin Jung, Eun Young Kim, Chang Heon Yang
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    Nam Hee Kim, Jung Ho Park, Dong Il Park, Chong Il Sohn, Kyuyong Choi, Yoon Suk Jung
    The Korean Journal of Internal Medicine.2018; 33(6): 1084.     CrossRef
  • Anemia at the time of diagnosis of inflammatory bowel disease: Prevalence and associated factors in adolescent and adult patients
    Alfredo J. Lucendo, Ángel Arias, Óscar Roncero, Daniel Hervías, Cristina Verdejo, Carmen Naveas-Polo, Abdelmouneim Bouhmidi, Rufo Lorente, Luis Miguel Alcázar, Irina Salueña, Julio A. García-Quiñones, María Jesús Carrillo-Ramos
    Digestive and Liver Disease.2017; 49(4): 405.     CrossRef
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Images of the Issue
A Patient With Abdominal Pain and Fever
Yoon Suk Jung
Intest Res 2015;13(3):291-293.   Published online June 9, 2015
DOI: https://doi.org/10.5217/ir.2015.13.3.291
PDFPubReader
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  • 40 Download
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Case Report
Perianal Abscess and Proctitis by Klebsiella pneumoniae
Woo Shin Jeong, Sung Youn Choi, Eun Haeng Jeong, Ki Bae Bang, Seung Sik Park, Dae Sung Lee, Dong Il Park, Yoon Suk Jung
Intest Res 2015;13(1):85-89.   Published online January 29, 2015
DOI: https://doi.org/10.5217/ir.2015.13.1.85
AbstractAbstract PDFPubReader

Klebsiella pneumoniae (K. pneumoniae) can at times cause invasive infections, especially in patients with diabetes mellitus and a history of alcohol abuse. A 61-year-old man with diabetes mellitus and a history of alcohol abuse presented with abdominal and anal pain for two weeks. After admission, he underwent sigmoidoscopy, which revealed multiple ulcerations with yellowish exudate in the rectum and sigmoid colon. The patient was treated with ciprofloxacin and metronidazole. After one week, follow up sigmoidoscopy was performed owing to sustained fever and diarrhea. The lesions were aggravated and seemed webbed in appearance because of damage to the rectal mucosa. Abdominal computed tomography and rectal magnetic resonance imaging were performed, and showed a perianal and perirectal abscess. The patient underwent laparoscopic sigmoid colostomy and perirectal abscess incision and drainage. Extended-spectrum beta-lactamase-producing K. pneumoniae was identified in pus culture. The antibiotics were switched to ertapenem. He improved after surgery and was discharged. K. pneumoniae can cause rapid invasive infection in patients with diabetes and a history of alcohol abuse. We report the first rare case of proctitis and perianal abscess caused by invasive K. pneumoniae infection.

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  • Microbiota in adult perianal abscess revealed by metagenomic next-generation sequencing
    Jian-Chen Hong, Jian-Sheng Chen, Zai-Jie Jiang, Zhi-Chuan Chen, Ning Ruan, Xiang-Ping Yao, Rosemary C. She
    Microbiology Spectrum.2024;[Epub]     CrossRef
  • An Unusual Case of Proctitis and Rectal Abscess due to Irritants byArtemisia asiaticaSmoke (Ssukjwahun)
    Seunghyup Kim, You Sun Kim, Seo Hyun Kim, Dong Hoon Lee, Se Jun Park, Seo Young Yun, Dae Young Kim, Jeonghun Lee, Jeong Seop Moon
    The Korean Journal of Gastroenterology.2016; 67(4): 212.     CrossRef
  • 9,739 View
  • 52 Download
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Original Article
Long-Term Clinical Outcomes of Korean Patient With Crohn's Disease Following Early Use of Infliximab
Nam Hee Kim, Yoon Suk Jung, Chang Mo Moon, Shin Yeong Lee, Eun Ran Kim, Young Ho Kim, Chang Kyun Lee, Suck Ho Lee, Jae Hak Kim, Kyu Chan Huh, Soon Man Yoon, Hyun Joo Song, Sun-Jin Boo, Hyun Joo Jang, You Sun Kim, Kang-Moon Lee, Jeong Eun Shin, Dong Il Park
Intest Res 2014;12(4):281-286.   Published online October 27, 2014
DOI: https://doi.org/10.5217/ir.2014.12.4.281
AbstractAbstract PDFPubReaderePub
<b>Background/Aims</b><br/>

Several recent studies have reported that the early use of infliximab (IFX) improves the prognosis of Crohn's disease (CD). However, no data are available from Asian populations, as the forementioned studies have all been conducted in Western countries. The aim of the current study was to evaluate the impact of early use of IFX on the prognosis of Korean patients with CD.

Methods

Patients with a diagnosis of CD established between July 1987 and January 2012 were investigated in 12 university hospitals in Korea. Because insurance coverage for IFX treatment began in August 2005, patients were assigned to either of 2 groups based on diagnosis date. The first group included patients diagnosed from July 1987 to December 2005, and the second from January 2006 to January 2012. We compared the cumulative probabilities of operation and reoperation between the two groups using the Kaplan-Meier method and a log-rank test.

Results

Of the 721 patients investigated, 443 (61.4%) comprized the second group. Although the cumulative probabilities of immunosuppressant (P<0.001) and IFX use (P<0.001) after diagnosis were significantly higher in the second group, there were no significant differences in cumulative probabilities of operation (P=0.905) or reoperation (P=0.418) between two groups.

Conclusions

The early use of IFX did not reduce CD-related surgery requirements in Korean patients with CD. These study results suggest that the early use of IFX may have little impact on the clinical outcome of CD in Korean patients in the setting of a conventional step-up algorithm.

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  • The Potential of Molecular Remission: Tissue Neutrophil Elastase Is Better Than Histological Activity for Predicting Long-Term Relapse in Patients With Ulcerative Colitis in Endoscopic Remission
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    Inflammatory Bowel Diseases.2025; 31(2): 514.     CrossRef
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    Therapeutic Advances in Gastroenterology.2024;[Epub]     CrossRef
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    Heliyon.2023; 9(9): e19609.     CrossRef
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    Rasmus Goll, Øystein K. Moe, Kay-Martin Johnsen, Renate Meyer, Joachim Friestad, Mona D. Gundersen, Hege Kileng, Knut Johnsen, Jon R. Florholmen
    BMC Gastroenterology.2022;[Epub]     CrossRef
  • Editorial: does anti‐TNF “treatment persistence” always equate to “effective treatment”? Only objective disease assessments can answer the question
    Ashish Srinivasan, Daniel R. van Langenberg
    Alimentary Pharmacology & Therapeutics.2021; 54(5): 718.     CrossRef
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    Cong-Qiu Chu
    Chinese Medical Journal.2021; 134(21): 2525.     CrossRef
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    Kenechukwu O Chudy-Onwugaje, Kaci E Christian, Francis A Farraye, Raymond K Cross
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    Samaneh Mohagheghi Darehranj, Sudabeh Alatab, Homayoon Vahedi, Anahita Sadeghi, Alireza Sima, Masoud Malekzadeh, Amir Anoshiravani, Hafez Fakheri, Nasser Ebrahimi Daryani, Abdolhamid Mousavi, Fariborz Mansour-Ghanaei, Mohammad Javad Zahedi, Reza Malekzade
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    Hyo Sun Lee, Soo-Kyung Park, Dong Il Park
    The Korean Journal of Internal Medicine.2018; 33(1): 20.     CrossRef
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    Jaeyoung Chun, Jong Pil Im, Ji Won Kim, Kook Lae Lee, Chang Hwan Choi, Hyunsoo Kim, Jae Hee Cheon, Byong Duk Ye, Young-Ho Kim, You Sun Kim, Yoon Tae Jeen, Dong Soo Han, Won Ho Kim, Joo Sung Kim
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    Jae Myung Cha, Dong Il Park, Sang Hyoung Park, Jeong Eun Shin, Wan Soo Kim, Suk-Kyun Yang
    Journal of Korean Medical Science.2017; 32(1): 85.     CrossRef
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    Seon Ho Bak, Hyun Ho Choi, Jinhee Lee, Mi Hee Kim, Youn Hee Lee, Jin Su Kim, Young-Seok Cho
    Intestinal Research.2017; 15(2): 244.     CrossRef
  • Long-Term Outcomes of Infliximab Treatment in 582 Korean Patients with Crohn’s Disease: A Hospital-Based Cohort Study
    Sang Hyoung Park, Sung Wook Hwang, Min Seob Kwak, Wan Soo Kim, Jeong-Mi Lee, Ho-Su Lee, Dong-Hoon Yang, Kyung-Jo Kim, Byong Duk Ye, Jeong-Sik Byeon, Seung-Jae Myung, Yong Sik Yoon, Chang Sik Yu, Jin-Ho Kim, Suk-Kyun Yang
    Digestive Diseases and Sciences.2016; 61(7): 2060.     CrossRef
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    Eun Soo Kim, Kyeong Ok Kim, Byung Ik Jang, Chang Kyun Lee, Hyo Jong Kim, Kang-Moon Lee, You Sun Kim, Chang Soo Eun, Sung-Ae Jung, Suk-Kyun Yang, Jun Lee, Tae-Oh Kim, Yunho Jung, Geom Seog Seo, Soon Man Yoon
    Gut and Liver.2016;[Epub]     CrossRef
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    Kyeong Ok Kim
    Gut and Liver.2016; 10(4): 487.     CrossRef
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    Eun Ji Lee, Tae Oh Kim, Geun Am Song, Jong hun Lee, Hyung Wook Kim, Sam Ryong Jee, Seun Ja Park, Hyun Jin Kim, Jong Ha Park
    Intestinal Research.2016; 14(1): 30.     CrossRef
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    Stanislaus Argeny, Anton Stift, Martina Mittlböck, Amy C. Lord, Svenja Maschke, Mathias Schneeweiß, Stefan Riss
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    Da Eun Jeong, Kyeong Ok Kim, Byung Ik Jang, Eun Young Kim, Jin Tae Jung, Seong Woo Jeon, Hyun Seok Lee, Eun Soo Kim, Kyung Sik Park, Kwang Bum Cho
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    Young Seok Doh, You Sun Kim, Song I Bae, Jong Pil Im, Jae Hee Cheon, Byong Duk Ye, Ji Won Kim, Young Sook Park, Ji Hyun Lee, Young-Ho Kim, Joo Sung Kim, Dong Soo Han, Won Ho Kim
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  • Management of Anemia in Patients with Inflammatory Bowel Disease
    Kyeong Ok Kim
    The Korean Journal of Gastroenterology.2015; 65(3): 145.     CrossRef
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    Byong Duk Ye
    Intestinal Research.2014; 12(4): 263.     CrossRef
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Letters to the Editor
The Real State of Colonoscopy Quality of Non-tertiary Hospitals in Korea
Yoon Suk Jung
Intest Res 2013;11(4):327-329.   Published online October 30, 2013
DOI: https://doi.org/10.5217/ir.2013.11.4.327
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Original Articles
Prevalence, Clinicopathologic Characteristics, and Predictors of Interval Colorectal Cancers in Korean Population
Chang Joon Kim, Yoon Suk Jung, Jung Ho Park, Hong Joo Kim, Yong Kyun Cho, Chong Il Sohn, Woo Kyu Jeon, Byung Ik Kim, Shin Yeong Lee, Hwa Mok Kim, Ki Bae Bang, Dae Sung Lee, Dong Il Park
Intest Res 2013;11(3):178-183.   Published online July 30, 2013
DOI: https://doi.org/10.5217/ir.2013.11.3.178
AbstractAbstract PDF
Background/Aims
A subset of patients may develop colorectal cancer after a colonoscopy that was negative for carcinoma. These missed or de novo developed lesions were termed as interval cancers. Many studies regarding interval cancer have been conducted in Western countries, whereas very limited data are available in Asian populations. Therefore, the purpose of this study was to investigate prevalence, clinicopathologic features, and predictors of interval colorectal cancers in the Korean population. Methods: Interval cancer was defined as a cancer that is diagnosed within 5 years of a negative colonoscopy result. Among the patients who were diagnosed colorectal cancers at Kangbuk Samsung Hospital from January 2007 to April 2012, clinicopathologic characteristics of interval cancers were compared with those of sporadic cancers. Results: Among the 785 patients, 482 responded to telephone calls. Of these, 30 (6.2%) developed interval cancers. Finally, 28 patients who had interval cancers were compared with 415 patients who had sporadic cancers. Interval cancer group was significantly younger and more frequent in the right side colon than sporadic cancer group. There was no differences in sex, tumor size, differentiation, and staging between two groups. In multivariate analysis, young age and right side colon cancer were independent factors associated with an interval cancer. Conclusions: A significant proportion of Korean patients developed interval colorectal cancer, especially at the young age and in the proximal colon. (Intest Res 2013;11:178-183)

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    Gut and Liver.2018; 12(5): 537.     CrossRef
  • Molecular Imaging of Colorectal Tumors by Targeting Colon Cancer Secreted Protein-2 (CCSP-2)
    Jaeil Kim, Eun-ju Do, Helen Moinova, Sang Mun Bae, Ja Young Kang, Seung-Mo Hong, Stephen P. Fink, Jinmyoung Joo, Young-Ah Suh, Se Jin Jang, Sung Wook Hwang, Sang Hyoung Park, Dong-Hoon Yang, Byong Duk Ye, Jeong-Sik Byeon, Jaewon Choe, Suk-Kyun Yang, Sanfo
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    Kil Woo Lee, Soo-Kyung Park, Hyo-Joon Yang, Yoon Suk Jung, Kyu Yong Choi, Kyung Eun Kim, Kyung Uk Jung, Hyung Ook Kim, Hungdai Kim, Ho-Kyung Chun, Dong Il Park
    Gut and Liver.2016; 10(5): 781.     CrossRef
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    Seung Eun Lee, Hee Bum Jo, Won Gun Kwack, Yun Jin Jeong, Yeo-Jin Yoon, Hyoun Woo Kang
    World Journal of Gastroenterology.2016; 22(10): 2981.     CrossRef
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    Yun Ho Lee, Seong Yeon Jeong, You Sun Kim, Hye Jin Jung, Min Jung Kwon, Cheol Hun Kwak, Song I Bae, Jeong Seop Moon, Ji Won Kim, Su Hwan Kim, Kook Lae Lee
    The Korean Journal of Gastroenterology.2015; 65(1): 27.     CrossRef
  • The Risk of Metachronous Advanced Colorectal Neoplasia Rises in Parallel with an Increasing Number of High-Risk Findings at Baseline
    Seung Min Lee, Jeong Hwan Kim, In Kyung Sung, Sung Noh Hong
    Gut and Liver.2015; 9(6): 741.     CrossRef
  • Rapidly Growing Interval Colon Cancer
    Jae Hyun Kim, Moo In Park
    The Korean Journal of Gastroenterology.2015; 65(5): 326.     CrossRef
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    Jae Myung Cha
    Intestinal Research.2014; 12(2): 110.     CrossRef
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    Jae Myung Cha
    Intestinal Research.2014; 12(2): 169.     CrossRef
  • Author's Reply
    Dong Il Park
    Intestinal Research.2014; 12(2): 171.     CrossRef
  • Development and Predictor of Interval Colorectal Cancer
    Tae-Oh Kim
    Intestinal Research.2013; 11(3): 153.     CrossRef
  • What Matters in Colonoscopy?
    Hyun Shig Kim
    Annals of Coloproctology.2013; 29(6): 223.     CrossRef
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Exposure to Diagnostic Radiation in Patients with Inflammatory Bowel Disease: A Single Center Study
Jae Wan Lim, Yoon Suk Jung, Jung Ho Park, Hong Joo Kim, Yong Kyun Cho, Chong Il Sohn, Woo Kyu Jeon, Byung Ik Kim, Dong Il Park
Intest Res 2013;11(2):107-112.   Published online April 30, 2013
DOI: https://doi.org/10.5217/ir.2013.11.2.107
AbstractAbstract PDF
Background/Aims
Western studies recently reported that patients with inflammatory bowel disease (IBD) are exposed to diagnostic radiation at potentially harmful levels. There is little research, however, on exposure to diagnostic radiation in patients with IBD in Asian areas. The present study assessed cumulative radiation exposure dose in patients with IBD who were treated at a single-tertiary medical center in Korea and analyzed the factors that increased the exposure dose. Methods: Retrospective investigation was performed of the medical records of the patients who were followed up for 1 year or more in a period from January 2003 through November 2011 at Kangbuk Samsung Hospital. Results: Included in the study were 202 patients with IBD: 80 (39.6%) had Crohn's disease (CD) and 122 (60.4%) had ulcerative colitis (UC). The mean follow-up period was 4.2±2.5 years for CD and 4.3±1.4 years for UC. The mean culmulative effective dose (CED) for CD and UC were 39.7 and 11.0 mSv respectively (P<0.001). In CD, factors associated with increased CED were surgery, history of intravenous steroid treatment, and structuring or penetrating disease. Conclusions: A substantial proportion of IBD patients, especially CD patients, were exposed to significantly harmful amounts of diagnostic radiation, mainly due to computed tomography examination. Efforts should be made to reduced diagnostic medical radiation, especially in patients at risk for increased radiation exposure. (Intest Res 2013;11:107-112)
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The Clinical Utility of Positron Emission Tomography-computed Tomography in the Evaluation of Inflammatory Bowel Diseases
Sung Ho Ryu, Jae Hee Cheon, Won Jun Kang, Jin Young Kim, Bo Kyung Kim, Jin Young Yoon, Yoon Suk Jung, Hyun Mi Heo, Jin Ha Lee, Soung Min Jeon, Sung Pil Hong, Tae Il Kim, Won Ho Kim
Intest Res 2011;9(2):97-104.   Published online August 30, 2011
DOI: https://doi.org/10.5217/ir.2011.9.2.97
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Background/Aims
Positron emission tomography-computed tomography (PET-CT) is a nuclear imaging technique that provides noninvasive, three dimensional, quantitative images. Recently, PET-CT has been shown to be valuable in assessing patients with inflammatory diseases; however, the clinical utility of PET-CT in the evaluation of inflammatory bowel disease (IBD) has not been defined. Thus, the aim of this study was to determine the clinical utility of PET-CT in the evaluation of IBD. Methods: Between November 2006 and September 2010, clinical, endoscopic, and radiological data on 14 patients (6 males and 8 females: age range, 33-79 years) with suspected IBD were collected. The standard work-up method for a definite diagnosis of IBD included ileocolonoscopy. Results: The 14 patients were divided into the following five groups: ulcerative colitis (n=4, 29%), intestinal Behcet's disease (n=3, 21%), intestinal tuberculosis (n=2, 14%), malignancy (n=2, 14%), and no abnormal findings with colonoscopy (n=3, 21%). A PET-CT based-diagnosis of IBD correlated with a colonoscopic diagnosis in nine cases (64.3%), but the matching ratio of the distribution of lesions between PET-CT findings and colonoscopic findings was only 18.1% (2/11). Conclusions: The utility of PET-CT in the diagnosis of IBD requires further evaluation. (Intest Res 2011;9:97-104)
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The Early Diagnostic Accuracy for Gastrointestinal T-cell Lymphoma from a Perspective of Gastroenterologists
Sung Ho Ryu, Jae Hee Cheon, Jin Young Kim, Bo Kyung Kim, Jin Young Yoon, Yoon Suk Jung, Hyun Mi Heo, Jin Ha Lee, Soung Min Jeon, Sung Pil Hong, Tae Il Kim, Won Ho Kim
Intest Res 2011;9(1):19-26.   Published online April 30, 2011
DOI: https://doi.org/10.5217/ir.2011.9.1.19
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Background/Aims
Primary T-cell lymphoma of the gastrointestinal tract is a very difficult disease entity to diagnose, and has an extremely poor prognosis. The aim of this study was to determine the early diagnostic accuracy for gastrointestinal T-cell lymphoma by gastroenterologists. Methods: Between January 2000 and October 2010, the clinical features of 15 patients with primary gastrointestinal T-cell lymphomas, including endoscopic findings, radiologic diagnosis, endoscopic biopsy findings, and final diagnosis, were retrospectively reviewed. Results: The most common initial presenting symptoms of primary gastrointestinal T-cell lymphomas was abdominal pain (n=11, 73%). The anatomic location of the primary lesion the small bowel (n=8, 53%), colon (n=5, 33%), and stomach (n=3, 20%). There were no cases of T-cell lymphomas diagnosed based on clinical symptoms, radiologic findings, or endoscopic findings without biopsy alone. Pathologic confirmation of T-cell lymphomas by endoscopic examination was achieved in 7 cases (64%) and the remaining cases (n=8, 53%) were diagnosed with T-cell lymphomas based on pathologic examination after surgery. Conclusions: All of the patients with primary T-cell lymphomas of the gastrointestinal tract were diagnosed exclusively by endoscopic or surgical pathologic examainations, suggesting that gastroenterologists should scrutinize and suspect this disease with caution due to atypical gastrointestinal ulcers. (Intest Res 2011;9: 6-26)

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