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Fig. 1 —Decision tree that models decision of whether to remove polyp
detected in 60-year-old asymptomatic adult undergoing CT colonography (CTC)
screening. Two strategies for CTC-detected polyps, colonoscopic polypectomy
versus no colonoscopy, are modeled over 10-year period. No-colonoscopy
strategy is equivalent to nonreporting of polyps at CTC. This decision tree
applies to all three polyp size categories. Triangle at end of course
signifies that patient will remain in that state until end of study period.
CRC = colorectal cancer.
