Breast cancer

What is breast cancer?

Breast cancer starts in the cells of the breast. Learn about symptoms, screening, diagnosis, treatment and risks in our guide to breast cancer.

Risks for breast cancer

There are many risks for breast cancer, including a family history of cancer and having dense breasts. Learn about breast cancer risk in women.

Screening for breast cancer

Screening helps find breast cancer before symptoms develop. The most reliable method is screening mammography.

Symptoms of breast cancer

A lump in the breast is the most common first symptom of breast cancer. Learn about the symptoms of breast cancer.

Diagnosis of breast cancer

Diagnostic tests are done when symptoms or screening suggest a problem with the breast. Learn about tests used to diagnose and stage breast cancer.

Grading breast cancer

Grading breast cancer tumours is an important part in planning treatment and estimating prognosis. Learn about the grades of breast cancer and grading ductal carcinoma in situ (DCIS).

Stages of breast cancer

Staging describes how much breast cancer there is in the body. Learn about the stages of breast cancer by the TNM system.

If breast cancer spreads

Cancer can spread from the breast to other parts of the body. This is called metastasis. Learn about common sites where breast cancer spreads.

Prognosis and survival for breast cancer

Prognosis estimates the outcome for breast cancer. Prognosis and survival depend on many factors, including the stage and grade of the cancer.

Treatments for breast cancer

Treatments for breast cancer include surgery, radiation, chemotherapy and hormone therapy. Learn about treatment plans and options for breast cancer.

Breast reconstruction, prostheses and remaining flat

Breast reconstruction, breast prostheses and choosing to "remain flat" are all options once you've had surgery to remove breast cancer.

Supportive care for breast cancer

Supportive care helps people meet the physical, practical, emotional and spiritual challenges of breast cancer. It is an important part of cancer care. There are many programs and services available to help meet the needs and improve the quality of life of people living with cancer and their loved ones.

Research in breast cancer

Researchers and healthcare professionals use what they learn from research studies to develop better practices that will help prevent, find and treat breast cancer.

Breast cancer statistics

Breast cancer is the second leading cause of cancer death in Canadian women.