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Breast cancer

Breast cancer starts in the ducts or lobules of the breast. Cells lining the ducts or lobules can grow out of control and develop into cancer.

Some breast cancers are found when they're still confined to the ducts or lobules of the breast. This is called pre-invasive breast cancer. The most common types are ductal carcinoma in situ (DCIS) and lobular carcinoma in situ (LCIS).

Most breast cancers are found when they're invasive. This means the cancer has spread outside the ducts or lobules of the breast into surrounding tissue. The most common types are invasive ductal cancer (IDC) and invasive lobular cancer (ILC).

There are several categories of invasive breast cancer.

• Early breast cancer: contained in the breast but may have spread to one or more lymph nodes in the armpit.
• Locally advanced breast cancer: cancer cells may have spread to places near the breast, such as the chest (including the skin, muscles or bones of the chest), but the cancer isn't found in other areas of the body.
• Metastatic breast cancer: cancer cells have spread from the breast to other areas of the body, such as the bones, liver or the lungs. This is also called advanced cancer.

MORE INFORMATION from CCV