Breast Cancer: What is Breast Cancer? - WFLA News Channel 8

Breast Cancer: What is Breast Cancer?

Posted: Updated:

From Centers for Disease Control and Prevention

A breast is made up of three main parts: glands, ducts, and connective tissue. The glands produce milk. The ducts are passages that carry milk to the nipple. The connective tissue (which consists of fibrous and fatty tissue) connects and holds everything together.

What Is a Normal Breast?

No breast is typical. What is normal for you may not be normal for another woman. Most women say their breasts feel lumpy or uneven. The way your breasts look and feel can be affected by getting your period, having children, losing or gaining weight, and taking certain medications. Breasts also tend to change as you age.

Lumps in the Breast

Many conditions can cause lumps in the breast, including cancer. But most breast lumps are caused by other medical conditions. The two most common causes of breast lumps are fibrocystic breast condition and cysts. Fibrocystic condition causes noncancerous changes in the breast that can make them lumpy, tender, and sore. Cysts are small fluid-filled sacs that can develop in the breast.

Tumors and Breast Cancer

Sometimes breast cells become abnormal. These abnormal cells grow, divide, and create new cells that the body does not need and that do not function normally. The extra cells form a mass called a tumor. Some tumors are "benign" or not cancer. These tumors usually stay in one spot in the breast and do not cause big health problems. Other tumors are "malignant" and are cancer. Breast cancer often starts out too small to be felt. As it grows, it can spread throughout the breast or to other parts of the body. This causes serious health problems and can cause death.

Common Kinds of Breast Cancer

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, like the ducts or the lobes.

Common kinds of breast cancer are—

  • Ductal carcinoma. The most common kind of breast cancer. It begins in the cells that line the milk ducts in the breast, also called the lining of the breast ducts.
    • Ductal carcinoma in situ (DCIS). The abnormal cancer cells are only in the lining of the milk ducts, and have not spread to other tissues in the breast.
    • Invasive ductal carcinoma. The abnormal cancer cells break through the ducts and spread into other parts of the breast tissue. Invasive cancer cells can also spread to other parts of the body.
  • Lobular carcinoma. In this kind of breast cancer, the cancer cells begin in the lobes, or lobules, of the breast. Lobules are the glands that make milk.
    • Lobular carcinoma in situ (LCIS). The cancer cells are found only in the breast lobules. Lobular carcinoma in situ, or LCIS, does not spread to other tissues.
    • Invasive lobular carcinoma. Cancer cells 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.

Uncommon Kinds of Breast Cancer

There are several other less common kinds of breast cancer, such as Paget's disease or inflammatory breast cancer. For more information, visit the National Cancer Institute's Inflammatory Breast CancerExternal Web Site Icon and Paget Disease of the Nipple: Questions and Answers.

Page last reviewed: August 31, 2010
Page last updated: June 9, 2011
Content source:
Division of Cancer Prevention and Control, National Center for Chronic Disease Prevention and Health Promotion

 

  • 8 On Your SideMore>>

  • Mortgage nightmare for Plant City couple

    Mortgage nightmare for Plant City couple

    Wednesday, April 16 2014 7:57 AM EDT2014-04-16 11:57:42 GMT
    Karl and Vicktoria Hanson thought their foreclosure nightmare was long over. It may be just beginning.
    Karl and Vicktoria Hanson thought their foreclosure nightmare was long over. It may be just beginning.
  • Bradenton massage therapist banned from contact with women by state

    Bradenton massage therapist banned from contact with women by state

    Tuesday, April 15 2014 5:03 PM EDT2014-04-15 21:03:21 GMT
    The Florida Department of Health says it served licensed massage therapist Kevin Joseph Holmes, 60, with an emergency order Tuesday morning that bans him from working with female clients.The Florida Department of Health says it served licensed massage therapist Kevin Joseph Holmes, 60, with an emergency order Tuesday morning that bans him from working with female clients.
    The Florida Department of Health says it served licensed massage therapist Kevin Joseph Holmes, 60, with an emergency order Tuesday morning that bans him from working with female clients.The order says Holmes "unrestricted practice as a massage therapist with female clients constitutes an immediate serious danger to the health, safety, or welfare of the public
    The Florida Department of Health says it served licensed massage therapist Kevin Joseph Holmes, 60, with an emergency order Tuesday morning that bans him from working with female clients.The order says Holmes "unrestricted practice as a massage therapist with female clients constitutes an immediate serious danger to the health, safety, or welfare of the public
  • State takes emergency action against Bradenton massage therapist after 8 On Your Side investigation

    State takes emergency action against Bradenton massage therapist after 8 On Your Side investigation

    Monday, April 14 2014 7:09 PM EDT2014-04-14 23:09:06 GMT
    Kevin Holmes, massage therapistKevin Holmes, massage therapist
    According topolice records Kevin Holmes, age 60, toldinvestigators the client he gave a therapeutic massage to last month"was an attractive girl, plain and simple."It turns out she was also an off-duty detective, and Holmes said what he did to her was "absolutely inapproriate."
    According topolice records Kevin Holmes, age 60, toldinvestigators the client he gave a therapeutic massage to last month"was an attractive girl, plain and simple."It turns out she was also an off-duty detective, and Holmes said what he did to her was "absolutely inapproriate."
  • Sign up for WFLA News Channel 8 Email Alerts

    * denotes required fields






    Thank you for signing up! You will receive a confirmation email shortly.
Powered by WorldNow

200 South Parker Street, Tampa, FL 33606

Telephone: 813.228.8888
Fax: 813.225.2770
Email: news@wfla.com

Can’t find something?
Powered by WorldNow
All content © Copyright 2000 - 2014 Media General Communications Holdings, LLC. A Media General Company.