title: [Methodological framework of the evaluation of systematic screening and treatment of preexistent lesions of the colon and the rectum].
abstract: Among the conditions which need to be filled when generalizing the mass screening of polyps in view of the secondary prevention of colorectal cancers, three are already present: 1) it is a frequent and serious cancer; 2) there is an affiliation between benign tumours and cancer; 3) an effective non-mutilating treatment of benign tumours is available. On the other hand, two additional conditions remain unfilled and yet lie within the domain of research by methodologically rigorous studies: the setting up of a screening test with a high cost-effectiveness relationship; the epidemiological demonstration of the decreasing incidence of colorectal cancers following screening and treatment of precancerous lesions.
mesh_terms: D000328:Adult; D000368:Aged; D003110:Colonic Neoplasms / Q000517:prevention & control; D003111:Colonic Polyps / Q000175:diagnosis* / Q000601:surgery; D003362:Cost-Benefit Analysis; D005260:Female; D006801:Humans; D007417:Intestinal Polyps / Q000175:diagnosis* / Q000601:surgery; D008297:Male; D008403:Mass Screening / Q000191:economics; D008875:Middle Aged; D009780:Occult Blood; D012004:Rectal Neoplasms / Q000175:diagnosis* / Q000601:surgery
vernacular_title: Cadre méthodologique de l'évaluation de dépistage systématique et du traitement des lésions pré-existantes du côlon et du rectum.