Open AccessOpportunistic detection of anal intraepithelial neoplasia at colonoscopy
Author(s) -
Forbes Clara M,
McCloskey Jenny,
Forbes Geoffrey M
Publication year - 2020
Publication title -
jgh open
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.546
H-Index - 8
ISSN - 2397-9070
DOI - 10.1002/jgh3.12424
Subject(s) - colonoscopy , medicine , retrospective cohort study , population , intraepithelial neoplasia , colorectal cancer , general surgery , gastroenterology , gynecology , cancer , prostate , environmental health
Background and Aim Human papilloma virus‐associated anal intraepithelial neoplasia (AIN) precedes most anal cancers and can be detected at colonoscopy. We aimed to quantify AIN detection rates in a general population undergoing colonoscopy. Methods A retrospective review of a community‐based practice for 2 years until December 2019 was conducted. Results A total of 2525 patients (1051 males and 1474 females; median age 59 years) had 2608 colonoscopies. Ten patients (two males and eight females; median age 57.5 years) had incidentally detected AIN (condyloma acuminatum or AIN1, n = 4; AIN2 or 3, n = 6). AIN was detected in 1 of 261 (95% CI 1/142–1/480) colonoscopies and 1 of 163 (95% CI 1/83–1/321) colonoscopies in women over 40 years old. Conclusions Opportunistically detecting AIN, especially in women over 40 years old, should be an important adjunct to colonoscopy‐based colorectal neoplasia detection.