Journal of Yeungnam Medical Science

Original articles

Gastroenterology and Hepatology
Increased risk of adenomatous colon polyps in patients with long-term use of proton pump inhibitors: a single-center retrospective study: Na Rae Lim, Woo Chul Chung; J Yeungnam Med Sci. 2025;42:24. Published online January 21, 2025; DOI: https://doi.org/10.12701/jyms.2025.42.24

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Abstract PDF: Background
It is unclear whether long-term use of proton pump inhibitors (PPIs) has a potential carcinogenic effect on the colorectum.
Methods
We reviewed a consecutive series of neurosurgery outpatients who underwent two or more colonoscopies between January 2014 and April 2023. Patients in whom the timing of endoscopy was not in accordance with the guidelines and those without a history of previous endoscopy were excluded. In the second colonoscopy, the risk of adenomatous colon polyps was evaluated depending on whether the patient had taken a PPI.
Results
In total, 520 patients were enrolled. In the multivariate analysis related to the risk of adenomatous colon polyps, age and aspirin use for >5 years were identified as significant factors. After excluding patients who had taken aspirin for >5 years, the patients were divided into three groups: those who had taken PPIs for >12 months, those who had taken PPIs for >3 months but <12 months, and those who had not taken PPIs. The risk of adenomatous colon polyps in these groups was 35.2%, 32.8%, and 22.8%, respectively (p=0.10). In the post-hoc analysis, there was a significant difference between patients who took PPIs and those who did not (p=0.03). In the multivariate analysis, a history of PPI use for >12 months was a significant risk factor for the development of advanced colon polyps (p=0.03).
Conclusion
Prolonged PPI use appears to increase the risk of developing adenomatous and advanced colon polyps.

Gastroenterology and Hepatology
Efficacy of ramosetron in combination with polyethylene glycol of preparing for a colonoscopy: Min Kyu Kang, Byung Ik Jang, Jun Suk Park, Kyeong Ok Kim; Yeungnam Univ J Med. 2019;36(2):99-104. Published online December 28, 2018; DOI: https://doi.org/10.12701/yujm.2019.00080

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Background
Because of its efficacy and safety, polyethylene glycol (PEG) is generally used to prepare for colonoscopy. However, the side effects of PEG, including nausea, vomiting, abdominal discomfort, pain, and general weakness, tend to decrease patient compliance and satisfaction. The aim of this study is to investigate the efficacy and safety of PEG with 0.1 mg ramosetron on colonoscopy patients who had difficulty taking PEG due to side effects or large volume.
Methods
From January to August in 2012, 28 patients who visited Yeungnam University hospital for a colonoscopy were prospectively enrolled. All enrolled patients were previous history underwent colonoscopy using PEG only in our hospital. The efficacy and safety of ramosetron were assessed through the use of a questionnaire, and compared previous bowel preparation.
Results
Compared to previous examination, the patients using the ramosetron reported less nausea, vomiting, abdominal discomfort, and abdominal pain, as well as a higher degree of compliance and satisfaction of the patient. There were no side effects reported with the use of ramosetron. However, overall bowel preparation quality was not better than the previous examination.
Conclusion
In case of the use of ramosetron in combination with PEG for bowel preparation, patients experienced a higher rate of compliance and tolerance. Looking forward, ramosetron may become an option of pretreatment for bowel preparation.

Citations

Citations to this article as recorded by

Tolerance to colonoscopy preparation with Fortrans and predictors of negative effects
I. A. Matveev, B. K. Gibert, A. I. Matveev, M. P. Kozlov
Bulletin of Siberian Medicine.2021; 20(1): 83. CrossRef

Case Report

Nephrology
Severe ileus after colonoscopy in a patient on peritoneal dialysis: Sang Un Kim, Su Hee Kim, So Yoon Hwang, Ryang Hi Kim, Ji Young Choi, Jang Hee Cho, Chan Duck Kim, Yong Lim Kim, Sun Hee Park; Yeungnam Univ J Med. 2017;34(1):119-122. Published online June 30, 2017; DOI: https://doi.org/10.12701/yujm.2017.34.1.119

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Abstract PDF: Peritoneal dialysis (PD) is associated with the development of various complications, such as exit site infection or peritonitis, and rarely, intestinal obstruction in prolonged PD patients with recurrent peritonitis. However, post-colonoscopy acute intestinal obstruction has not been reported in PD patients to date. Herein, we report a case of severe ileus after a colonoscopy without previous episodes of peritonitis in a PD patient. A 51-year-old man undergoing PD for 7 years visited our emergency department due to severe abdominal pain and vomiting after colonoscopic polypectomy. A simple abdominal radiography and abdominal computed tomography showed ileus with collapsed distal ileal loop. A peritoneal dialysate study revealed no evidence of peritonitis. The patient was treated with decompression therapy, and ileus was successfully treated without complications. This case suggests that it is not only necessary to prevent peritonitis, but also important to monitor the development of ileus after colonoscopy in PD patients.

Original Article

Gastroenterology and Hepatology
High levels of carcinoembryonic antigen and smoking might be markers of colorectal adenoma in Korean males aged 40-49 years.: In Cheol Yoon, Jeong Hyeon Cho, Heejin Choi, Young Hoon Choi, Kyu Min Lim, Sung Hwa Choi, Jae Ho Han, Hyeon Ju Jeong, Hong Sub Lee; Yeungnam Univ J Med. 2016;33(1):13-20. Published online June 30, 2016; DOI: https://doi.org/10.12701/yujm.2016.33.1.13

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Abstract PDF: BACKGROUND
Prevalence of adenoma in males aged 40-49 years in Korea was higher than expected. The aim of this study was to investigate the prevalence and risk factors of colorectal adenoma in males aged 40-49 years. METHODS: Total 1,902 asymptomatic subjects with a mean age of 47.9±6.7 years, who underwent a screening colonoscopy in a health promotion center of Myongji Hospital from 2010 to 2013 were enrolled in this study. We conducted a case-control study to determine the risk factors for adenoma. The subjects were classified into two groups (adenoma vs. controls). To validate the diagnostic value of carcinoembryonic antigen (CEA) for adenoma, area under the receiver operating characteristic curve (AUROC) was calculated. RESULTS: At least one colorectal adenoma was identified in 385 subjects (20.2%). Among these 385 subjects, 372 subjects were found to have a non-advanced adenoma, 13 subjects had an invasive adenoma. One subject had cancer. Male sex, age, smoking, metabolic syndrome, and elevated CEA level were significantly associated with a colorectal adenoma in univariate analysis. However, metabolic syndrome was not significant in multivariate analysis. In the male group, the AUROC of CEA for colorectal adenoma was 0.600 (0.543 to 0.656) in non-smokers under 50 years of age, and 0.615 (0.540 to 0.690) in smokers under 50 years of age. CONCLUSION: Male sex, smoking, and high levels of CEA seem to be associated with colorectal adenoma. High levels of CEA and smoking may be diagnostic markers for any colorectal adenoma in Korean males aged 40-49 years.

Case Reports

Gastroenterology and Hepatology
Colon Cancer with a Nonspecific Inflammatory Colonoscopic Finding.: Jae Hyun Park, Byung Ik Jang, Ho Chan Lee, Sung Joon Kim, Jun Seok Park; Yeungnam Univ J Med. 2009;26(2):114-119. Published online December 31, 2009; DOI: https://doi.org/10.12701/yujm.2009.26.2.114

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Abstract PDF: Colon cancer is the second most common malignancy in Korea. It is classified as superficial type, the mass type, the ulcerative type, the ulceroinfiltrative type, the diffuse infiltrative type and the unclassified type according to the colonoscopic findings. We report here on a case of colon cancer that was initially misdiagnosed as acute infectious colitis at the initial presentation. A 64-year-old man visited to Yeungnam University Hospital for watery diarrhea and lower abdominal pain. Colonoscopy revealed long segmental edematous mucosa and hyperemic mucosa with stenosis in the transverse colon. He was diagnosed as having acute infectious colitis according to the colonoscopic finding. However, two days later after colonoscopy, he visited the emergency room for hematochezia. We performed computerized tomography(CT) and obtained blood samples to find the origin of the bleeding. We found thickening of the transverse colon lumen and ascites on the CT finding and an elevated level of tumor markers; we also obtained the results of the colonoscopic biopsy that was done via colonoscopy. He was finally diagnosed as having colon cancer with carcinomatosis, a poorly differentiated adenocarcinoma.

Gastroenterology and Hepatology
Black Pigmentation of Terminal Ileum after Long Term Ingestion of Charcoal: Jun Young Lee, Sung Bum Kim, Sang Hoon Lee, Hee Jung Moon, Jae Won Choi, Jong Ryul Eun, Byung Ik Jang, Tae Nyeun Kim, Joon Hyuk Choi; Yeungnam Univ J Med. 2007;24(2 Suppl):S623-626. Published online December 31, 2007; DOI: https://doi.org/10.12701/yujm.2007.24.2S.S623

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Abstract PDF

Isolated pigmentation of the terminal ileum is rare incidental finding when performing a colonoscopic examination. The common substances that cause gastrointestinal pigmentations are lipofuscin, iron sulphide(FeS), hemosiderin, and other exogenous materials such as silicates and titanium. In most cases, pigmentation of the terminal ileum has no subjective symptoms, so it is found in autopsy or incidental colonoscopic examination. The cause of pigmentation has not been clearly identified. We experienced a case of pigmentation of terminal ileum associated with long term charcoal ingestion. This finding supports that the source of ileal pigmentation is ingested material.

Citations

Citations to this article as recorded by

A rare case of melanosis ilei of unclear etiology
Nikita Parkash, Owen McKay, Ian Simpson, Simon Hew
iGIE.2025;[Epub] CrossRef

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