Right biopsy protocol for microscopic colitis: Reduced workload and carbon footprint while maintaining diagnostic accuracy

doi:10.4292/wjgpt.v17.i2.113874

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World Journal of Gastrointestinal Pharmacology and Therapeutics

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2150-5349

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

Retrospective Cohort Study

Copyright: ©Author(s) 2026. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial (CC BY-NC 4.0) license. No commercial re-use. See permissions. Published by Baishideng Publishing Group Inc.

World J Gastrointest Pharmacol Ther. Jun 5, 2026; 17(2): 113874
Published online Jun 5, 2026. doi: 10.4292/wjgpt.v17.i2.113874

Table 2 Biopsy sampling patterns observed among 228 index colonoscopies

Biopsy sampling pattern	n (%)
Biopsy container labelled “random colon” present	60 (26)
Only a container labelled “random colon” present	46 (20)
Full serial biopsies from all colonic segments	8 (4)
A container labelled “right colon” and one labelled “left colon”	84 (37)
Other combinations of containers	76 (33)
At least one container identified as originating from the right colon	150 (66)
At least one container identified as originating from the left colon (excluding the rectum)	158 (69)
At least one container identified from both right and left colon (excluding the rectum)	136 (60)
At least one container labelled “rectal”	117 (51)

Full Size Table

Citation: Leung E, Alshareefy Y, Costigan C, Sihag S, Delaney S, O’Donnell S, Breslin N, O’Connor A, Ryan B, Zaheer A, Cretu I, O’Hara F, McNamara D. Right biopsy protocol for microscopic colitis: Reduced workload and carbon footprint while maintaining diagnostic accuracy. World J Gastrointest Pharmacol Ther 2026; 17(2): 113874
URL: https://www.wjgnet.com/2150-5349/full/v17/i2/113874.htm
DOI: https://dx.doi.org/10.4292/wjgpt.v17.i2.113874

Leung E, Alshareefy Y, Costigan C, Sihag S, Delaney S, O’Donnell S, Breslin N, O’Connor A, Ryan B, Zaheer A, Cretu I, O’Hara F, McNamara D. Right biopsy protocol for microscopic colitis: Reduced workload and carbon footprint while maintaining diagnostic accuracy. World J Gastrointest Pharmacol Ther 2026; 17(2): 113874 [PMID: 42273242 DOI: 10.4292/wjgpt.v17.i2.113874]

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