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Gastroenterology / Original Article
Risk of colorectal cancer in kidney transplant recipients and patients with end-stage renal disease undergoing hemodialysis
Yongchel Ahn, Hoon Yu, Yoonjong Bae, Mina Kim, Seung Bum Lee
Korean J Intern Med. 2025;40(6):952-960. Published online October 28, 2025
Background/Aims: Assessing the risk of colorectal cancer (CRC) after kidney transplantation (KT) in patients with endstage renal disease (ESRD) receiving dialysis is crucial to determine KT’s risks and benefits. In Korea, the study results remain unclear. Therefore, using a nationwide health scree..
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Gastroenterology / Original Article
Submucosal saline injection and mini-probe endoscopic ultrasound to assess endoscopic resectability of colorectal subepithelial tumors
Jung-Bin Park, Ji Eun Baek, June Hwa Bae, Seung Wook Hong, Sung Wook Hwang, Sang Hyoung Park, Byong Duk Ye, Jeong-Sik Byeon, Seung-Jae Myung, Suk-Kyun Yang, Dong-Hoon Yang
Korean J Intern Med. 2025;40(4):592-605. Published online July 1, 2025
Background/Aims: This study aimed to evaluate the feasibility and outcomes of mini-probe endoscopic ultrasound (mEUS) followed by submucosal saline injection (SSI-mEUS) for assessing the endoscopic resectability of colorectal subepithelial lesions (SELs).
Methods: From January 2020 to December 2023..
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Gastroenterology / Review
Approaches and considerations in the endoscopic treatment of T1 colorectal cancer
Yunho Jung
Korean J Intern Med. 2024;39(4):563-576. Published online May 14, 2024
The detection of early colorectal cancer (CRC) is increasing through the implementation of screening programs. This increased detection enhances the likelihood of minimally invasive surgery and significantly lowers the risk of recurrence, thereby improving patient survival and reducing mortality rat..
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Gastroenterology / Review
Strategies to improve screening colonoscopy quality for the prevention of colorectal cancer
Joo Hye Song, Eun Ran Kim
Korean J Intern Med. 2024;39(4):547-554. Published online January 22, 2024
The incidence and mortality of colorectal cancer (CRC) have decreased through regular screening colonoscopy, surveillance, and endoscopic treatment. However, CRC can still be diagnosed after negative colonoscopy. Such CRC is called interval CRC and accounts for 1.8–9.0% of all CRC cases. Most case..
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Gastroenterology / Original Article
Analysis of the gut microbiome using extracellular vesicles in the urine of patients with colorectal cancer
Hyuk Yoon, Nam-Eun Kim, Jihye Park, Cheol Min Shin, Nayoung Kim, Dong Ho Lee, Jae Yong Park, Chang Hwan Choi, Jae Gyu Kim, Young Soo Park
Korean J Intern Med. 2023;38(1):27-38. Published online November 10, 2022
Background/Aims: We evaluated the gut microbiome using extracellular vesicles (EVs) in the urine of patients with colorectal cancer (CRC) to determine whether gut-microbe-derived EVs could be a potential biomarker for the diagnosis of CRC.
Methods: EVs were isolated from the urine of patients with ..
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Hemato-oncology / Original Article
Association between serum ferritin levels and colorectal cancer risk in Korea
Hyunho Kim, Kyungdo Han, Seung-Hyun Ko, Ho Jung An
Korean J Intern Med. 2022;37(6):1205-1215. Published online October 25, 2022
Background/Aims: The concentration of serum ferritin, a storage form of iron, may be associated with carcinogenesis in various cancers. There are only limited studies on the relationship between serum ferritin levels and colorectal cancer (CRC) risk, especially in the Asian population. This study ai..
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Gastroenterology / Original Article
Factors associated with the risk of colorectal neoplasia in young adults under age 40
Ilsoo Kim, Han Hee Lee, Young Jae Ko, Ho Eun Chang, Dae Young Cheung, Bo-In Lee, Young-Seok Cho, Jin Il Kim, Myung-Gyu Choi
Korean J Intern Med. 2022;37(5):969-978. Published online July 25, 2022
Background/Aims: Recent epidemiologic studies have shown a continued increase in colorectal cancer incidence among younger adults. Little is known about the factors that contribute to the development of young-onset colorectal neoplasia (CRN).
Methods: A cross-sectional analysis was performed for ind..
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Gastroenterology / Original Article
Positive fecal immunochemical test results are associated with non-colorectal cancer mortality
Yoon Suk Jung, Jinhee Lee, Chang Mo Moon
Korean J Intern Med. 2022;37(2):313-321. Published online September 29, 2021
Background/Aims: Studies have reported an association between fecal occult blood and increased all-cause, non-colorectal cancer (CRC) as well as CRC mortality. This study aimed to determine whether positive fecal immunochemistry test (FIT) results are associated with death from various causes in the..
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Gastroenterology / Original Article
Prevalence and associated risk of advanced colorectal neoplasia in adults with sarcopenia
[letter]
Min Cheol Kim, Kyeong Ok Kim, Min Kyu Kang
Korean J Intern Med. 2022;37(2):294-303. Published online December 16, 2021
Background/Aims: Although several studies have shown that sarcopenia is associated with poor outcomes in colorectal cancer patients, the impact of sarcopenia on the development of colorectal neoplasia remains unclear. We aimed to evaluate the prevalence and association of colorectal neoplasia, espec..
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Hemato-oncology / Original Article
Surtuin 1 as a potential prognostic biomarker in very elderly patients with colorectal cancer
Guk Jin Lee, Yun Hwa Jung, Tae-Jung Kim, Yosep Chong, Seo-Won Jeong, In Kyu Lee, In Sook Woo
Korean J Intern Med. 2021;36(Suppl 1):S235-S244. Published online July 2, 2020
Background/Aims: Colorectal cancer (CRC) rate increases with aging. Aging-related proteins, such as sirtuins (SIRTs) may be a potential therapeutic target in the elderly patients with CRC. The clinical implications of SIRT1 and SIRT2 have not been reported for elderly patients with cancer. The aim of..
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Gastroenterology / Original Article
Risk of colorectal cancer in patients with positive results of fecal immunochemical test performed within 5 years since the last colonoscopy
Yoon Suk Jung, Jinhee Lee, Chang Mo Moon
Korean J Intern Med. 2021;36(5):1083-1091. Published online June 18, 2021
Background/Aims: Annual fecal immunochemical tests (FITs) are often repeated within the recommended colonoscopy surveillance intervals. However, it remains unclear whether interval FITs are useful. To answer this question, we assessed the risk of colorectal cancer (CRC) according to the interval fro..
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Gastroenterology / Original Article
Second-look endoscopy findings after endoscopic submucosal dissection for colorectal epithelial neoplasms
Soo-kyung Park, Hyeon Jeong Goong, Bong Min Ko, Haewon Kim, Hyo Sun Seok, Moon Sung Lee
Korean J Intern Med. 2021;36(5):1063-1073. Published online June 9, 2021
Background/Aims: Although second-look endoscopy (SLE) is frequently performed after gastric endoscopic submucosal dissection (ESD) to prevent bleeding, no studies have reported SLE findings after colorectal ESD. This study aimed to investigate SLE findings and their role in preventing delayed bleedi..
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Hemato-oncology / Original Article
Clinical characteristics and survival of colorectal cancer patients in Korea stratified by age
Sun Kyung Baek, Ji Sung Lee, In Gyu Hwang, Jong Gwang Kim, Tae Won Kim, Seung Kook Sohn, Mi Yeon Kang, Sang-Cheol Lee
Korean J Intern Med. 2021;36(4):985-991. Published online April 6, 2021
Background/Aims: This nationwide study was undertaken to determine differences in clinicopathologic characteristics and survival of patients with colorectal cancer (CRC) according to age using big data from the Korean National Health Insurance Service (NHIS).
Methods: The NHIS data including qualit..
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Gastroenterology / Original Article
Application of deep learning to predict advanced neoplasia using big clinical data in colorectal cancer screening of asymptomatic adults
Hyo-Joon Yang, Chang Woo Cho, Jongha Jang, Sang Soo Kim, Kwang-Sung Ahn, Soo-Kyung Park, Dong Il Park
Korean J Intern Med. 2021;36(4):845-856. Published online October 23, 2020
Background/Aims: We aimed to develop a deep learning model for the prediction of the risk of advanced colorectal neoplasia (ACRN) in asymptomatic adults, based on which colorectal cancer screening could be customized.
Methods: We collected data on 26 clinical and laboratory parameters, including ag..
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Gastroenterology / Original Article
Food intake and its effect on the species and abundance of intestinal flora in colorectal cancer and healthy individuals
Weitao Shen, Jiayu Sun, Zhiyang Li, Fen Yao, Kaihuang Lin, Xiaoyang Jiao
Korean J Intern Med. 2021;36(3):568-583. Published online November 10, 2020
Background/Aim: It is known that an imbalance in the intestinal f lora plays a crucial role in colorectal cancer (CRC), but the effect of food consumption patterns on the types of intestinal flora remains to be clarified. We aimed to analyze the associations between food intake and intestinal flora ..
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Gastroenterology / Original Article
Impact of nonalcoholic fatty liver disease on the risk of metachronous colorectal neoplasia after polypectomy
Nam Hee Kim, Yoon Suk Jung, Jung Ho Park, Dong Il Park, Chong Il Sohn
Korean J Intern Med. 2021;36(3):557-567. Published online July 7, 2020
Background/Aims: Metabolic syndrome has been reported to be a risk factor for metachronous colorectal neoplasia (CRN). However, the impact of nonalcoholic fatty liver disease (NAFLD), a hepatic manifestation of metabolic syndrome, on the development of metachronous CRN after polypectomy has been rar..
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Gastroenterology / Original Article
Sex difference in bowel preparation quality and colonoscopy time
Young-Jae Hwang, Dong Woo Shin, Nayoung Kim, Hyuk Yoon, Cheol Min Shin, Young Soo Park, Dong Ho Lee
Korean J Intern Med. 2021;36(2):322-331. Published online June 22, 2020
Background/Aims: The length of colon is known to be longer in females than in males. In addition, the morphology of colon cancer is different between males and females. The aim of this study was to investigate sex differences in Boston bowel preparation score (BBPS) and colonoscopy insertion time.
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Gastroenterology / Original Article
Association between high fatty liver index and development of colorectal cancer: a nationwide cohort study with 21,592,374 Korean
Yoon Jin Choi, Dong Ho Lee, Kyung-Do Han
Korean J Intern Med. 2020;35(6):1354-1363. Published online April 10, 2020
Background/Aims: In Korea, the incidence of colorectal cancer (CRC) and nonalcoholic fatty liver disease (NAFLD) has increased due to a westernized lifestyle. This study investigated whether a high fatty liver index that reflects NAFLD correlates with CRC.
Methods: Data from the National Health Ins..
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Review
Evaluating the recent developments in palliative chemotherapy for metastatic colorectal cancer
Sun Kyung Baek, Kyu Taek Lee, Sang Byung Bae, Sang-Cheol Lee
Korean J Intern Med. 2019;34(6):1188-1196. Published online July 29, 2019
The incidence of colorectal cancer (CRC) has increased. CRC is the third most common cancer and the fourth most common cause of cancer-related deaths in Korea. Palliative chemotherapy can be used to shrink tumors and ease symptoms caused by the cancer when cure is not possible. It is important to id..
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Hemato-oncology / Original Article
The impact of primary tumor location in patients with metastatic colorectal cancer: a Korean Cancer Study Group CO12-04 study
Jae Ho Byun, Joong Bae Ahn, Sun Young Kim, Jung Hun Kang, Dae Young Zang, Seok Yun Kang, Myoung Joo Kang, Byoung Yong Shim, Sun Kyung Baek, Bong-Seog Kim, Kyung Hee Lee, Soon Il Lee, Sang-Hee Cho, Byeong Seok Sohn, Samyong Kim, In Gyu Hwang, Eun Mi Nam, Bong-Gun Seo, Sang Cheul Oh, Myung-Ah Lee, Sang-Cheol Lee, Ji Hyung Hong, Young Suk Park
Korean J Intern Med. 2019;34(1):165-177. Published online November 28, 2017
Background/Aims: Colorectal cancer is associated with different anatomical, biological, and clinical characteristics. We determined the impact of the primary tumor location in patients with metastatic colorectal cancer (mCRC).
Methods: Demographic data and clinical information were collected from 1..
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