摘要
Cancer screening is a source of much debate. At the interface between public health, specialist care, economics and policy, it creates tensions between professional groups, politicians, the media and the public. A screening test may be cheap, but applying it to a population (with rigorous quality control and effective processing of patients with abnormal results) creates a huge workload and therefore cost. Screening can also have psychological effects on individuals with false-positive results who require investigation but are eventually found not to have cancer.
