Clinical Management of Small (6- to 9-mm) Polyps Detected at Screening CT Colonography: A Cost-Effectiveness Analysis
Perry J. Pickhardt1,2,
Cesare Hassan3,
Andrea Laghi4,
Angelo Zullo3,
David H. Kim1,
Franco Iafrate4 and
Sergio Morini3
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.
2 Department of Radiology, Uniformed Services University of the Health Sciences,
Bethesda, MD.
3 Gastroenterology and Digestive Endoscopy Unit, "Nuovo Regina
Margherita" Hospital, Rome, Italy.
4 Department of Radiological Sciences, University of Rome La Sapienza
"Policlinico Umberto I," Rome, Italy.

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Fig. 1 —Decision tree that models alternative pathways of 3-year CT
colonography (CTC) surveillance versus immediate polypectomy for 6- to 9-mm
polyps detected in 60-year-old asymptomatic adults undergoing CTC screening.
Strategies are modeled over a 5-year period. A strategy of no intervention was
also simulated. Triangle at end of a course signifies that patient will remain
in that state until end of study period. CRC = colorectal cancer.
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