The investigators are retrospectively comparing detection rates of adenomatous polyps, advanced adenomas, and size assessment of the polyps among Rush University Medical Center endoscopists. The investigators plan to review whether the size assessment of adenomatous polyps affected the surveillance protocols and if the location of polyps detected affected the detection rates.
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Adenomatous Polyp Detection Rate
Timeframe: one year
Endoscopic Size Assessment Versus Pathological Size Assessment
Timeframe: one year