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Closer surveillance of patients with IBD may entail earlier diagnosis (lead-time) of cases and overdiagnosis of colorectal cancer and that would not otherwise have surfaced clinically. Lead-time and overdiagnosis would make survival analyses which compare prognosis between IBD-related and IBD-unrelated colorectal cancer difficult to interpret.20 Therefore, the extent of colonoscopic surveillance – organized or opportunistic - should be reliably reported in all studies.
Copyright and License information: ©2016
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