Extracolonic Findings at Screening CT Colonography: Prevalence, Benefits, Challenges, and Opportunities.
OBJECTIVE
Extracolonic findings at screening CT colonography (CTC) represent imaging findings incidentally detected outside the colon and rectum. Confusion regarding rates reported in the literature fuels controversy over the relative benefits versus harms of extracolonic findings.


CONCLUSIONS
From an evidence-based approach, this article reviews the prevalence and benefits of and challenges raised by extracolonic findings, as well as opportunities to further leverage the effect of screening CTC. The role of the radiologist in handling these lesions responsibly is emphasized.
1 Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3/311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792-3252.
B Dustin
BD
Pooler
1 Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3/311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792-3252.
David H
DH
Kim
1 Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3/311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792-3252.
Perry J
PJ
Pickhardt
D023881:Colonography, Computed Tomographic / Q000379:methods*; D006801:Humans; D033162:Incidental Findings; D008403:Mass Screening; D015995:Prevalence
CT colonography; extracolonic findings; incidental findings; screening; virtual colonoscopy