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Radiology. 2012 May;263(2):383-90. doi: 10.1148/radiol.12111869.

Colonoscopy after CT diagnosis of diverticulitis to exclude colon cancer: a systematic literature review.

Author information

  • 1Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA 94143, USA. victor.sai@ucsf.edu

Erratum in

  • Radiology. 2012 Jul;264(1):306.

Abstract

PURPOSE:

To estimate the prevalence of underlying adenocarcinoma of the colon in patients in whom acute diverticulitis was diagnosed at computed tomography (CT) and to compare that to the prevalence of colon cancer in the general population.

MATERIALS AND METHODS:

A comprehensive literature review was performed to find articles in which patients with CT diagnosis of acute diverticulitis underwent surgery, colonoscopy, or barium enema study within 24 weeks. Patients meeting these criteria were included for analysis. A pooled prevalence of cancer was calculated on the basis of a random effects model and compared qualitatively with the prevalence of cancer in the general population. The 95% confidence intervals around the prevalence of cancer in the study populations were determined.

RESULTS:

Ten articles met the inclusion criteria. Data from these articles included only 771 patients who underwent surgery, colonoscopy, or barium enema study within 24 weeks of diagnosis. Fourteen patients were found to have colon cancer, for a prevalence of 2.1% (95% confidence interval: 1.2%, 3.2%). This compares to a calculated estimated prevalence of 0.68% among U.S. adults older than 55 years.

CONCLUSION:

There are limited data to support the recommendation to perform colonoscopy after a diagnosis of acute diverticulitis.

PMID:
22517956
[PubMed - indexed for MEDLINE]
PMCID:
PMC3329267
Free PMC Article

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