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Colorectal neoplasm — Clinical Guidelines

Overview

Colorectal neoplasms encompass a spectrum of lesions including adenomas and carcinomas affecting the colon and rectum, posing significant health risks due to their potential to progress to malignancy. Early detection and management are crucial for improving outcomes.

Diagnosis

Fecal Immunochemical Test (FIT): Useful for screening, particularly in younger adults with metabolic syndrome 4.

Colonoscopy: Gold standard for detection and biopsy; key performance indicators include caecal intubation rate and adenoma detection rate 1 10 11.

Autofluorescence Imaging (AFI): Enhanced detection of flat neoplasms compared to standard colonoscopy 8.

Colon Capsule Endoscopy (CCE): Emerging alternative for outpatient diagnostics, especially beneficial during pandemics 2.

Virtual Colonoscopy: Offers non-invasive imaging with potential advantages in safety and patient acceptance 18.

Management

Polypectomy: Primary intervention for adenomas; endoscopic techniques like endoscopic submucosal dissection (ESD) for larger or flat lesions 7 14.

Vitamin D Supplementation: Considered for chemoprevention, though evidence is mixed; requires further validation 3.

Laparoscopic vs Open Surgery: Selection bias exists; laparoscopic approaches are increasingly favored but not universally applied 9.

Carbon Dioxide Insufflation: During ESD, may reduce abdominal discomfort compared to air insufflation 16.

Special Populations

Younger Adults: FIT can predict adenomas effectively 4.

Elderly and Comorbidities: No specific guidelines provided in abstracts; individualized assessment recommended.

Pregnancy: Not addressed in provided abstracts.

Key Recommendations

Utilize FIT for screening in younger adults with metabolic syndrome to predict colorectal neoplasms effectively (Evidence: Moderate 4).

Ensure colonoscopy meets key performance indicators such as high caecal intubation rates and adenoma detection rates to optimize diagnostic yield (Evidence: Strong 1 10 11).

Consider endoscopic techniques like ESD for larger or flat lesions to improve en bloc resection rates (Evidence: Moderate 7 14).

Evaluate the role of vitamin D supplementation in chemoprevention with caution, acknowledging mixed evidence (Evidence: Weak 3).

Prefer laparoscopic techniques in colorectal surgery when feasible, acknowledging potential selection biases (Evidence: Moderate 9).

References

1 Beaton D, Sharp L, Trudgill N, Thoufeeq M, Nicholson BD, Rogers P et al.. British Society of Gastroenterology national evaluation of colonoscopy quality: findings from the National Endoscopy Database. Gastrointestinal endoscopy 2025. link 2 Bjørsum-Meyer T, Koulaouzidis A, Baatrup G. Comment on "Artificial intelligence in gastroenterology: A state-of-the-art review". World journal of gastroenterology 2022. link 3 Emmanouilidou G, Kalopitas G, Bakaloudi DR, Karanika E, Theocharidou E, Germanidis G et al.. Vitamin D as a chemopreventive agent in colorectal neoplasms. A systematic review and meta-analysis of randomized controlled trials. Pharmacology & therapeutics 2022. link 4 Yeh JH, Lin CW, Wang WL, Lee CT, Chen JC, Hsu CC et al.. Positive Fecal Immunochemical Test Strongly Predicts Adenomas in Younger Adults With Fatty Liver and Metabolic Syndrome. Clinical and translational gastroenterology 2021. link 5 Hsu WF, Cheng SY, Shun CT, Chang LC, Tu CH, Wang HP et al.. Higher risk of advanced histology in adenoma less than 10 mm in fecal immunochemical test screening: Implication for management. Journal of gastroenterology and hepatology 2020. link 6 Malik KI, Siau K, Dunckley P, Ward ST. Colorectal trainees in the UK struggle to meet JAG certification standards in colonoscopy by the end of their training. Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland 2019. link 7 Visrodia K, Sethi A. How to Learn and Perform Endoscopic Submucosal Dissection and Full-Thickness Resection in the Colorectum in the United States. Gastrointestinal endoscopy clinics of North America 2019. link 8 Takeuchi Y, Sawaya M, Oka S, Tamai N, Kawamura T, Uraoka T et al.. Efficacy of autofluorescence imaging for flat neoplasm detection: a multicenter randomized controlled trial (A-FLAT trial). Gastrointestinal endoscopy 2019. link 9 Verzaro R, Mattia S, Rago T, Casella F, Ferroni A, Gianfreda V et al.. Selection Bias in Colorectal Surgery in a Non-Tertiary Hospital: Laparoscopic Versus Open Surgery. Journal of laparoendoscopic & advanced surgical techniques. Part A 2018. link 10 Rees CJ, Thomas Gibson S, Rutter MD, Baragwanath P, Pullan R, Feeney M et al.. UK key performance indicators and quality assurance standards for colonoscopy. Gut 2016. link 11 Fraser AG, Gamble GD, Rose TR, Dunn JP. Colonoscopy audit over 10 years--what can be learnt?. The New Zealand medical journal 2013. link 12 Chiu HM, Lee YC, Tu CH, Chen CC, Tseng PH, Liang JT et al.. Association between early stage colon neoplasms and false-negative results from the fecal immunochemical test. Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association 2013. link 13 de Jonge V, Sint Nicolaas J, Cahen DL, Moolenaar W, Ouwendijk RJ, Tang TJ et al.. Quality evaluation of colonoscopy reporting and colonoscopy performance in daily clinical practice. Gastrointestinal endoscopy 2012. link 14 Uraoka T, Parra-Blanco A, Yahagi N. Colorectal endoscopic submucosal dissection in Japan and Western countries. Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society 2012. link 15 Jackson CS, Haq T, Olafsson S. Push enteroscopy has a 96% cecal intubation rate in colonoscopies that failed because of redundant colons. Gastrointestinal endoscopy 2011. link 16 Saito Y, Uraoka T, Matsuda T, Emura F, Ikehara H, Mashimo Y et al.. A pilot study to assess the safety and efficacy of carbon dioxide insufflation during colorectal endoscopic submucosal dissection with the patient under conscious sedation. Gastrointestinal endoscopy 2007. link 17 Rathgaber SW, Wick TM. Colonoscopy completion and complication rates in a community gastroenterology practice. Gastrointestinal endoscopy 2006. link 18 Farrell RJ, Morrin MM, McGee JB. Virtual colonoscopy: a gastroenterologist's perspective. Digestive diseases (Basel, Switzerland) 1999. link 19 Kudo S, Kashida H, Tamura S, Nakajima T. The problem of "flat" colonic adenoma. Gastrointestinal endoscopy clinics of North America 1997. link 20 Pascal RR, Hertzler G, Hunter S, Goldschmid S. Pseudoinvasion with high-grade dysplasia in a colonic adenoma. Distinction from adenocarcinoma. The American journal of surgical pathology 1990. link 21 Rawlinson J, Tate JJ, Shepherd DF, Royle GT, Brunton FJ. Through the colonoscope--a radiologist's view. Clinical radiology 1990. link81660-5) 22 Johnson SM. Colonoscopy and polypectomy. American journal of surgery 1978. link90283-0) 23 Nicosia JF, Abcarian H. The localization of rectosigmoidal tumors or biopsy sites by methylene blue marking. Diseases of the colon and rectum 1977. link

Colorectal neoplasm