title: Screening and early diagnosis.
abstract: Although colorectal cancer is the second leading cause of death in the US, the majority of diagnoses are made at an advanced stage, and screening detects 70% at an early stage, controversy has existed because of a lack of experimental controlled trial evidence showing a decrease in mortality. Indirect and now direct evidence supports the current screening guidelines of the American Cancer Society and the National Cancer Institute as reasonable and should be continued.
authors.forename: C R
authors.initials: CR
authors.lastname: Smart
mesh_terms: D000328:Adult; D015179:Colorectal Neoplasms / Q000175:diagnosis / Q000517:prevention & control*; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000379:methods*; D008875:Middle Aged; D009780:Occult Blood; D010808:Physical Examination; D012812:Sigmoidoscopy / Q000379:methods