RESUMO
Objective:Colorectal cancer screening was performed on a general population with age ranging between 40 and 74 years old to evaluate the screening effects of questionnaire survey, fecal occult blood (FOB) test, and colonoscopy, as well as to provide some implications of colorectal cancer screening strategies. Methods: Two-step screening model of questionnaire survey combined with FOB test was applied for the screening. Colonoscopy was conducted in a high-risk population identified through preliminary screening as final diagnosis. Results:Based on the 2,117,304 cases screened, the screening compliance was 39.72%, and 126,118 cases (5.96%) were identified as high risk. Colonoscopies were performed on 25,837 cases, of which 8,095, 1,236, 134, 112, and 336 were identified as adenoma, advanced adenoma, severe dysplasia lesions, early cancer, and advanced cancer, respectively. The early stage di-agnostic rate was 81.52%. Conclusion:The colorectal cancer screening method performed in Tianjin can significantly concentrate on the high-risk population with colorectal cancer, increase the positivity rate of total colonoscopy, and economize medical resources.