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Is increased colorectal screening effective in preventing distant disease?

Fig 1

Model of a successful screening program.

The widely accepted concept is that colonic neoplasia progress from less advanced to more advanced stages (from adenoma to localized to regional to distant) and become more symptomatic as they progress. As screening quality is improved and more people are being screened, as has been the case in the US since 2000, we expect a screening effect that reduces the incidence rates of all stages of disease. This model predicts that a successful screening program would exert its largest reduction in incidence on distant CRC.

Fig 1

doi: https://doi.org/10.1371/journal.pone.0200462.g001