Differences in cancer dynamics may explain why prostate screening has cut metastatic disease while breast screening has not

Differences in how specific types of cancer grow and metastasise may explain why screening has reduced the number of men found to have metastatic prostate cancer at the time of diagnosis but has had no effect on the proportion of women with metastatic breast cancer when first diagnosed, a new analysis claims.

The analysis, published in the New England Journal of Medicine,1 looked at trends in the number of women over 40 with metastatic breast cancer at first presentation using data from the US …