Annals of Coloproctology

Original Article

Colorectal cancer

Estimation of risk posed by malignant polyps amongst colorectal surgeons in Australia and New Zealand: Andrew P. Zammit, Ian Brown, John D. Hooper, David A. Clark, Andrew D. Riddell; Ann Coloproctol. 2024;40(2):114-120. Published online March 25, 2024; DOI: https://doi.org/10.3393/ac.2023.00178.0025

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Abstract PDF Supplementary Material: Purpose
The estimation of the risk posed by malignant polyps for residual or lymphatic disease plays a central role. This study investigated colorectal surgeons’ assessment of these risks associated with malignant polyps.
Methods
A cross-sectional questionnaire was electronically administered to colorectal surgeons in Australia and New Zealand in October 2022. The questionnaire contained 17 questions on demographics, when surgeons consider colorectal resection appropriate, and the risk assessment for 5 hypothetical malignant polyps.
Results
The mean risk of residual or lymphatic disease that would prompt surgeons to recommend colonic resection was 5%. However, this increased to a mean risk of 10% if the malignant polyp was located in the rectum, and the only resection option was abdominoperineal resection with end-colostomy. There was high concordance between the estimated risk of residual or lymphatic disease by colorectal surgeons and the Association of Coloproctology of Great Britain and Ireland (ACPGBI) guidelines for the 5 hypothetical malignant polyps, with the ACPGBI estimated risk lying within the 95% confidence interval for 4 of the 5 malignant polyps. Nonetheless, 96.6% of surgeons felt that an online risk calculator would improve clinical practice.
Conclusion
Colorectal surgeons in Australia and New Zealand accurately estimated the risk posed by malignant polyps. An online risk calculator may assist in better conveying risk to patients.

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