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What Is Breast Cancer?

You have breast cancer. Now what?

These four words can AND will change your life forever. You are immediately forced to look at your own mortality. Suddenly you are face to face with the many complex medical, psychosocial, emotional, legal and financial challenges.

What is breast cancer?

Breast cancer is a disease in which cells in the breast grow out of control. There are different kinds of breast cancer. The kind of breast cancer depends on which cells in the breast turn into cancer.

Breast cancer can begin in different parts of the breast. A breast is made up of three main parts: lobules, ducts, and connective tissue. The lobules are the glands that produce milk. The ducts are tubes that carry milk to the nipple. The connective tissue (which consists of fibrous and fatty tissue) surrounds and holds everything together. Most breast cancers begin in the ducts or lobules.

Breast cancer can spread outside the breast through blood vessels and lymph vessels. When breast cancer spreads to other parts of the body, it is said to have metastasized.

Kinds of Breast Cancer

The most common kinds of breast cancer are—

  • Invasive ductal carcinoma. The cancer cells begin in the ducts and then grow outside the ducts into other parts of the breast tissue. Invasive cancer cells can also spread, or metastasize, to other parts of the body.
  • Invasive lobular carcinoma. Cancer cells begin in the lobules and then spread from the lobules to the breast tissues that are close by. These invasive cancer cells can also spread to other parts of the body.

(Source: CDC | What Is Breast Cancer?)

There are only 4 stages of breast cancer.

The earlier you can catch it, it the better.