Breast cancer isn't the death sentence it used to be — mortality rates in the United States are currently 24 percent lower than they were just 17 years ago. Other stats in this story by the San Francisco Chronicle are scarier. Scientists now know who's most likely to be diagnosed with breast cancer and they can also predict who's most likely not to survive.
Abnormal, uncontrolled cell division resulting in a malignant tumour that may invade surrounding tissues or spread to distant parts of the body.
Full medical glossary
