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The influence of the surveillance time interval on the risk of advanced neoplasia after non-advanced adenoma removal
- Source :
- The Medical journal of Australia. 215(10)
- Publication Year :
- 2021
-
Abstract
- OBJECTIVES To investigate the incidence of advanced neoplasia (colorectal cancer or advanced adenoma) at surveillance colonoscopy following removal of non-advanced adenoma; to determine whether the time interval before surveillance colonoscopy influences the likelihood of advanced neoplasia. DESIGN Retrospective cohort study. SETTING, PARTICIPANTS Patients enrolled in a South Australian surveillance colonoscopy program with findings of non-advanced adenoma during 1999-2016 who subsequently underwent surveillance colonoscopy. MAIN OUTCOME MEASURES Incidence of advanced neoplasia at follow-up surveillance colonoscopy. RESULTS Advanced neoplasia was detected in 169 of 965 eligible surveillance colonoscopies (18%) for 904 unique patients (median age, 62.0 years; interquartile range [IQR], 54.0-69.0 years), of whom 570 were men (59.1%). The median interval between the initial and surveillance procedures was 5.2 years (IQR, 4.4-6.0 years; range, 2.0-14 years). Factors associated with increased risk of advanced neoplasia at follow-up included age (per year: odds ratio [OR], 1.03; 95% CI, 1.01-1.05), prior history of adenoma (OR, 1.48; 95% CI, 1.01-2.15), two non-advanced adenomas identified at baseline procedure (v one: OR, 1.74; 95% CI, 1.18-2.57), and time to surveillance colonoscopy (OR, 1.21; 95% CI, 1.08-1.37). The estimated incidence of advanced neoplasia was 19% five years after non-advanced adenoma removal, and 30% at ten years. CONCLUSIONS Increasing the surveillance colonoscopy interval beyond five years after removal of non-advanced adenoma increases the risk of detection of advanced neoplasia at follow-up colonoscopy.
- Subjects :
- Adenoma
Male
medicine.medical_specialty
Time Factors
Colorectal cancer
Colonoscopy
Interquartile range
Risk Factors
Internal medicine
medicine
Humans
Early Detection of Cancer
Aged
Retrospective Studies
medicine.diagnostic_test
business.industry
Incidence (epidemiology)
Australia
Retrospective cohort study
General Medicine
Odds ratio
Middle Aged
medicine.disease
Increased risk
Practice Guidelines as Topic
Female
business
Colorectal Neoplasms
Subjects
Details
- ISSN :
- 13265377
- Volume :
- 215
- Issue :
- 10
- Database :
- OpenAIRE
- Journal :
- The Medical journal of Australia
- Accession number :
- edsair.doi.dedup.....14c848482da88399d4fcd6c3f63c7870