Abstract:Colorectal cancers are common throughout the world, although their incidence varies across continents and countries. 28% of these cancers are rectal and two-thirds of the remaining 72% are of left colonic location. Screening and prevention have proven effective in reducing the incidence of these cancers and their mortality. The best screening results in the so-called average-risk general population have been obtained in the USA, where first-line endoscopy is the gold standard when in other countries, especiall… Show more
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