Breast Cancer Screening: A New Era?

By the time the initial clinical trials has started population screening with mammography, this technique has widely been used in many countries. The Health Insurance Plan (HIP) trial started in 1963 and was offered to women with an age ranging from 40 to 64. The participants was randomized in 2 groups: the first were followed up with clinical exploration and mammography, while clinical follow up was offered to the control group. Ten years later, the mortality of the intervention group was reduced by 30% compared to the control group. Other trials, like the Two-County, showed similar results