Breast Cancer

By: CPMC Genetic Counseling Staff
Reviewed by: Mary B. Daly, MD, PhD Fox Chase Cancer Center

Breast cancer is a cancer that forms in the cells of the breasts. There are a variety of types of breast cancers, but cancer that starts in the milk ducts (ductal carcinoma) is the most common form. Breast cancer is most common among people over the age of 60. Twelve percent of women will be diagnosed with breast cancer at some point in their lifetime1.

How Common is Breast Cancer?

Both men and women can develop breast cancer, but it is far more common among women. Breast cancer is the most common cancer diagnosed among women of all races and Hispanic populations2.

In 2009, over 200,000 women were diagnosed with breast cancer and over 40,000 died from the disease2. It is expected that 1 in 8 women in the United States will develop breast cancer in their lifetime3.

To schedule a free telephone consultation to discuss your CPMC results with a board-certified genetic counselor, email This email address is being protected from spambots. You need JavaScript enabled to view it. .

Learn more about Breast Cancer, from symptoms to understanding your risk, through the links below.

Page References

Symptoms, Diagnosis, Treatment

Learn more about Breast Cancer [ Learn More › ]

Risk Factors

Both genetic and non-genetic factors play a role in Breast Cancer [ Learn More › ]


Reduce Your Risk

Risk-reducing behaviors for Breast Cancer [ Learn More › ]

The CPMC Study

Learn how the CPMC Study identifies your risk for Breast Cancer [ Learn More › ]


Educational Sessions

An educational video series on Breast Cancer [ Learn More › ]