How serious or dangerous is breast cancer?

Breast ca: Very, can kill you.

It depends!: It depends on the type of breast cancer, the "stage" (ie how big or small, whether it has spread to lymph nodes), and other factors. Most breast cancer is detected early and cured. Left untreated, breast cancer can definitely lead to death. Overall, compared to other cancers, breast cancer has a very good prognosis. More than 85% of women are alive 5 years after diagnosis!

Can be serious: It depends on the type and stage of the breast cancer. Breast cancer can be very serious and dangerous.