Screening for colorectal cancer

Efforts to decrease the number of deaths from colorectal cancer have focused on screening techniques, since no etiologic agent has been identified. Current screening regimens are designed to detect colorectal cancer in a large population in a cost-efficient manner and to minimize the risks associated with work-ups for false-positive tests. A two-part screening questionnaire for colorectal cancer helps identify patients who are at moderate risk for this cancer.