Intestinal Research

Tae-Geun Gweon

2 Articles

Colorectal neoplasia

A survey of current practices in post-polypectomy surveillance in Korea: Jeongseok Kim, Tae-Geun Gweon, Min Seob Kwak, Su Young Kim, Seong Jung Kim, Hyun Gun Kim, Eun Ran Kim, Sung Noh Hong, Eun Sun Kim, Chang Mo Moon, Dae Seong Myung, Dong Hoon Baek, Shin Ju Oh, Hyun Jung Lee, Ji Young Lee, Yunho Jung, Jaeyoung Chun, Dong-Hoon Yang, on behalf of the Intestinal Tumor Research Group of the Korean Association for the Study of Intestinal Diseases (KASID); Intest Res 2024;22(2):186-207. Published online April 25, 2024; DOI: https://doi.org/10.5217/ir.2023.00109

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Background/Aims
We investigated the clinical practice patterns of post-polypectomy colonoscopic surveillance among Korean endoscopists.
Methods
In a web-based survey conducted between September and November 2021, participants were asked about their preferred surveillance intervals and the patient age at which surveillance was discontinued. Adherence to the recent guidelines of the U.S. Multi-Society Task Force on Colorectal Cancer (USMSTF) was also analyzed.
Results
In total, 196 endoscopists completed the survey. The most preferred first surveillance intervals were: a 5-year interval after the removal of 1–2 tubular adenomas < 10 mm; a 3-year interval after the removal of 3–10 tubular adenomas < 10 mm, adenomas ≥ 10 mm, tubulovillous or villous adenomas, ≤ 20 hyperplastic polyps < 10 mm, 1–4 sessile serrated lesions (SSLs) < 10 mm, hyperplastic polyps or SSLs ≥ 10 mm, and traditional serrated adenomas; and a 1-year interval after the removal of adenomas with highgrade dysplasia, >10 adenomas, 5–10 SSLs, and SSLs with dysplasia. In piecemeal resections of large polyps ( > 20 mm), surveillance colonoscopy was mostly preferred after 1 year for adenomas and 6 months for SSLs. The mean USMSTF guideline adherence rate was 30.7%. The largest proportion of respondents (40.8%–55.1%) discontinued the surveillance at the patient age of 80–84 years.
Conclusions
A significant discrepancy was observed between the preferred post-polypectomy surveillance intervals and recent international guidelines. Individualized measures are required to increase adherence to the guidelines.

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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.2024;[Epub] CrossRef

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Colorectal neoplasia

Postgastrectomy gastric cancer patients are at high risk for colorectal neoplasia: a case control study: Tae-Geun Gweon, Kyu-Tae Yoon, Chang Hyun Kim, Jin-Jo Kim; Intest Res 2021;19(2):239-246. Published online November 13, 2020; DOI: https://doi.org/10.5217/ir.2020.00009

Abstract PDF PubReader ePub

Background/Aims
Several studies have shown that colorectal neoplasms (CRN) including colorectal cancer (CRC) may be prevalent in patients with gastric cancer. However, in most of these studies, colonoscopy to investigate the prevalence of CRN was performed prior to surgery. We aimed to investigate whether CRN was more prevalent in postgastrectomy gastric cancer patients than in healthy individuals.
Methods
We reviewed the medical records of those patients within a cohort of gastric cancer patients with gastrectomy who underwent colonoscopy between 2016 and 2017. Controls age- and sex-matched with gastric cancer patients at a 2:1 ratio were identified among those who underwent colonoscopy at a health-promotion center. The frequencies of CRN, advanced CRN (ACRN), and CRC among patients with gastrectomy were compared with those in the control subjects. A total of 744 individuals (gastric cancer, 248; control, 496) were included.
Results
The rates of CRN and ACRN in the gastric cancer group were higher than those in the healthy individuals (CRN, 47.6% vs. 34.7%, P< 0.001; ACRN, 16.9% vs. 10.9%, P= 0.020). The rate of CRC was comparable between the 2 groups (2.0% vs. 0.6%, P= 0.125). Multivariate analysis identified previous gastrectomy for gastric cancer and male sex as significant risk factors for (A)CRN.
Conclusions
CRN and ACRN were more prevalent in patients who underwent surgery for gastric cancer than in the control group. Regular surveillance colonoscopy at appropriate intervals is indicated after gastrectomy.

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Effect of bowel preparation completion time on bowel cleansing efficacy: Prospective randomized controlled trial of different bowel preparation completion times precolonoscopy
Hye Min Kim, Hyo Suk Kim, Young Eun An, Jae Hyuck Chang, Tae Ho Kim, Chang Whan Kim, Tae‐Geun Gweon
Digestive Endoscopy.2024;[Epub] CrossRef
Calcium, Vitamin D, and Colorectal Cancer
Young-Jo Wi, Soo-Young Na
The Korean Journal of Gastroenterology.2023; 82(2): 47. CrossRef
Comparison of 2 L Polyethylene Glycol Plus Ascorbic Acid and 4 L Polyethylene Glycol in Elderly Patients Aged 60–79: A Prospective Randomized Study
Sung Hoon Jung, Chul-Hyun Lim, Tae-Geun Gweon, Jinsu Kim, Jung Hwan Oh, Kyu-Tae Yoon, Jee Young An, Jeong‑Seon Ji, Hwang Choi
Digestive Diseases and Sciences.2022; 67(10): 4841. CrossRef
Colonoscopy Insertion in Patients with Gastrectomy: Does Position Impact Cecal Intubation Time?
Jae Hyun Kim, Youn Jung Choi, Hye Jung Kwon, Gyu Man Oh, Kyoungwon Jung, Sung Eun Kim, Won Moon, Moo In Park, Seun Ja Park
Digestive Diseases and Sciences.2022; 67(9): 4533. CrossRef
Early gastric neoplasms are significant risk factor for colorectal adenoma: A prospective case-control study
Seong-Jung Kim, Jun Lee, Dae Youb Baek, Jun Hyung Lee, Ran Hong
Medicine.2022; 101(32): e29956. CrossRef
Colorectal Neoplasia in CDH1 Pathogenic Variant Carriers: A Multicenter Analysis
Peter P. Stanich, Dareen Elgindi, Elena Stoffel, Erika Koeppe, Ajay Bansal, Rachel Stetson, Debra L. Collins, Dana Farengo Clark, Eve Karloski, Beth Dudley, Randall E. Brand, Michael J. Hall, Yana Chertock, Brian A. Sullivan, Charles Muller, Alice Hinton,
American Journal of Gastroenterology.2022; 117(11): 1877. CrossRef

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