Breast cancer
How the tumour starts in breast tissue, and why early detection changes the outlook.
Breast cancer begins when cells in the glandular tissue or the ducts that carry milk start dividing without control. Most lumps that can be felt are not cancer, but only imaging can confirm that.
We explain what separates a localised tumour from one that has already invaded other tissue, what role mammography plays in early detection, and why the outlook depends as much on the type of tumour as on when it is caught.
