Clinical Endoscopy

Tiing Leong Ang

2 Articles

Use of artificial intelligence in the management of T1 colorectal cancer: a new tool in the arsenal or is deep learning out of its depth?: James Weiquan Li, Lai Mun Wang, Katsuro Ichimasa, Kenneth Weicong Lin, James Chi-Yong Ngu, Tiing Leong Ang; Clin Endosc 2024;57(1):24-35. Published online September 25, 2023; DOI: https://doi.org/10.5946/ce.2023.036

The field of artificial intelligence is rapidly evolving, and there has been an interest in its use to predict the risk of lymph node metastasis in T1 colorectal cancer. Accurately predicting lymph node invasion may result in fewer patients undergoing unnecessary surgeries; conversely, inadequate assessments will result in suboptimal oncological outcomes. This narrative review aims to summarize the current literature on deep learning for predicting the probability of lymph node metastasis in T1 colorectal cancer, highlighting areas of potential application and barriers that may limit its generalizability and clinical utility.

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Prediction of Lymph Node Metastasis in T1 Colorectal Cancer Using Artificial Intelligence with Hematoxylin and Eosin-Stained Whole-Slide-Images of Endoscopic and Surgical Resection Specimens
Joo Hye Song, Eun Ran Kim, Yiyu Hong, Insuk Sohn, Soomin Ahn, Seok-Hyung Kim, Kee-Taek Jang
Cancers.2024; 16(10): 1900. CrossRef
Approaches and considerations in the endoscopic treatment of T1 colorectal cancer
Yunho Jung
The Korean Journal of Internal Medicine.2024; 39(4): 563. CrossRef

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Clinical Features and Predictors of Dysplasia in Proximal Sessile Serrated Lesions: Yi Yuan Tan, Gary Sei Kiat Tay, Yu Jun Wong, James Weiquan Li, Andrew Boon Eu Kwek, Tiing Leong Ang, Lai Mun Wang, Malcolm Teck Kiang Tan; Clin Endosc 2021;54(4):578-588. Published online April 29, 2021; DOI: https://doi.org/10.5946/ce.2020.198

Abstract PDF PubReader ePub

Background
/Aims: Proximal colorectal cancers (CRCs) account for up to half of CRCs. Sessile serrated lesions (SSLs) are precursors to CRC. Proximal location and presence of dysplasia in SSLs predict higher risks of progression to cancer. The prevalence of dysplasia in proximal SSLs (pSSLs) and clinical characteristics of dysplastic pSSLs are not well studied.
Methods
Endoscopically resected colonic polyps at our center between January 2016 and December 2017 were screened for pSSLs. Data of patients with at least one pSSL were retrieved and clinicopathological features of pSSLs were analysed. pSSLs with and without dysplasia were compared for associations.
Results
Ninety pSSLs were identified, 45 of which had dysplasia giving a prevalence of 50.0%. Older age (65.9 years vs. 60.1 years, p=0.034) was associated with the presence of dysplasia. Twelve pSSLs were 10 mm or larger. After adjusting for age, pSSLs ≥10 mm had an adjusted odds ratio of 5.98 (95% confidence interval, 1.21–29.6) of having dysplasia compared with smaller pSSLs.
Conclusions
In our cohort of pSSLs, the prevalence of dysplasia is high at 50.0% and is associated with lesion size ≥10 mm. Endoscopic resection for all proximal serrated lesions should be en-bloc to facilitate accurate histopathological examination for dysplasia as its presence warrants shorter surveillance intervals.

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Clinical and endoscopic characteristics of colorectal sessile serrated lesions with or without dysplasia/carcinoma: A systematic review and meta‐analysis
Qing Qing Zhang, Jian Di Wu, Xue Yan Li, Fei Fei Fang, Gang Ping Li, Tao Bai, Jun Song
Journal of Digestive Diseases.2024; 25(7): 424. CrossRef
Korean Guidelines for Postpolypectomy Colonoscopic Surveillance: 2022 revised edition
Su Young Kim, Min Seob Kwak, Soon Man Yoon, Yunho Jung, Jong Wook Kim, Sun-Jin Boo, Eun Hye Oh, Seong Ran Jeon, Seung-Joo Nam, Seon-Young Park, Soo-Kyung Park, Jaeyoung Chun, Dong Hoon Baek, Mi-Young Choi, Suyeon Park, Jeong-Sik Byeon, Hyung Kil Kim, Joo
Intestinal Research.2023; 21(1): 20. CrossRef
Microvesicular hyperplastic polyp and sessile serrated lesion of the large intestine: a biological continuum or separate entities?
Adrian C Bateman, Adam L Booth, Raul S Gonzalez, Neil A Shepherd
Journal of Clinical Pathology.2023; 76(7): 429. CrossRef
Korean Guidelines for Postpolypectomy Colonoscopic Surveillance: 2022 Revision
Su Young Kim
The Korean Journal of Medicine.2023; 98(3): 102. CrossRef
Classification and endoscopic diagnosis of colorectal polyps
Ji Hyun Kim, Sung Chul Park
Journal of the Korean Medical Association.2023; 66(11): 633. CrossRef
Korean Guidelines for Postpolypectomy Colonoscopic Surveillance: 2022 Revised Edition
Su Young Kim, Min Seob Kwak, Soon Man Yoon, Yunho Jung, Jong Wook Kim, Sun-Jin Boo, Eun Hye Oh, Seong Ran Jeon, Seung-Joo Nam, Seon-Young Park, Soo-Kyung Park, Jaeyoung Chun, Dong Hoon Baek, Mi-Young Choi, Suyeon Park, Jeong-Sik Byeon, Hyung Kil Kim, Joo
The Korean Journal of Gastroenterology.2022; 80(3): 115. CrossRef
Impact of looping on premalignant polyp detection during colonoscopy
Osamu Toyoshima, Toshihiro Nishizawa, Shuntaro Yoshida, Tatsuya Matsuno, Toru Arano, Ryo Kondo, Kazunori Kinoshita, Yuki Yasumi, Yosuke Tsuji, Mitsuhiro Fujishiro
World Journal of Gastrointestinal Endoscopy.2022; 14(11): 694. CrossRef
Korean guidelines for postpolypectomy colonoscopic surveillance: 2022 revised edition
Su Young Kim, Min Seob Kwak, Soon Man Yoon, Yunho Jung, Jong Wook Kim, Sun-Jin Boo, Eun Hye Oh, Seong Ran Jeon, Seung-Joo Nam, Seon-Young Park, Soo-Kyung Park, Jaeyoung Chun, Dong Hoon Baek, Mi-Young Choi, Suyeon Park, Jeong-Sik Byeon, Hyung Kil Kim, Joo
Clinical Endoscopy.2022; 55(6): 703. CrossRef

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