Skip to content

    Breast Cancer Health Center

    Font Size
    A
    A
    A

    What Is Breast Cancer?

    Like most cancers, this type happens when cells grow too quickly and don’t die. Cancer is named for where it starts out. With breast cancer, most often it starts as a small tumor that grows in your breast, near it, or in your armpit.

    When it’s caught early, it can be very treatable. Chances of survival are based on the stage of your cancer. If it hasn’t spread yet, it can usually be treated successfully before it does.

    Recommended Related to Breast Cancer

    Should You Be Tested for the Breast Cancer Gene?

    Most of the more than 232,000 cases of breast cancer that will be diagnosed in the United States this year are not due to a faulty gene passed down through families. As with most other cancers, they happen because of genetic mutations that happen as we age. But about 15% of women with breast cancer have at least one relative who has also had the disease, and 5% to 10% have specific inherited mutations in one of two genes that have been linked to breast cancer, known as BRCA1 and BRCA2. These mutations...

    Read the Should You Be Tested for the Breast Cancer Gene? article > >

    While treatments are improving, breast cancer can be deadly -- it’s a leading cause of cancer death in women, second to lung cancer. Once cancer begins to spread, it is more difficult to get rid of it. Doctors use a system called staging to sort how far cancer has spread and how serious it is.

    How Do You Spot It?

    You might notice changes in your breast each month that go along with your period. Most lumps you notice on your own are not cancerous. They are called benign.

    If you do feel a lump and it doesn’t go away after your next period, or you notice other suspicious symptoms, give your doctor a call. They can check it out for you. You’ll get peace of mind or your doctor can start you on a treatment plan, if you need it.

    You should also know that most breast cancers are found by a doctor after a mammogram. They can see lumps using this type of X-ray before you can feel them.

    Which Part of the Breast Is Most Likely to Get Cancer?

    Breast lumps are most common in two places:

    Cancerous tumors are called malignant tumors. They grow out of control and can invade nearby tissues and have the potential to metastasize, or spread. Once this kind of tumor grows to a certain size, it is more likely to shed cells that spread to other parts of the body. It does this through the bloodstream and lymphatic system.

    Different types of breast cancer grow and spread at different speeds. Some take years to spread beyond the breast, while others move quickly. That’s why it’s best to get checked if you think something is wrong.

    Today on WebMD

    Breast Cancer Overview
    From mammograms to living after treatment.
    Dealing with breast cancer
    Get answers to your questions.
     
    woman having mammogram
    The 3 latest tips to know.
    woman undergoing breast cancer test
    Most abnormalities aren’t breast cancer.
     
    Resolved To Quit Smoking
    VIDEO
    Breast Cancer Treatments Improving
    Article
     
    Woman getting mammogram
    Article
    Screening Tests for Women
    Article
     
    serious woman
    Article
    Pink badge on woman chest to support breat cancer
    QUIZ
     
    what is your cancer risk
    Article
    breast cancer survivors
    Article