Mammogram reports sent to women often mention breast density. Your health care provider can also tell you if your mammogram shows that you have dense breasts. In some states, women whose mammograms show heterogeneously dense or extremely dense breasts must be told that they have dense breasts in the summary of the mammogram report that is sent to patients sometimes called the lay summary. Dense breast tissue is common and is not abnormal.
Does Having Dense Breasts Increase Your Risk for Cancer?
Breast cancer - Symptoms and causes - Mayo Clinic
Your breasts are made up of fibrous tissue or connective tissue , glandular tissue the type of tissue that produces milk , and fatty tissue. If you're told you have dense breasts, this means that you have more fibrous and glandular tissue and less fatty tissue than women who don't have dense breasts. Having dense breasts is normal; it is not a medical condition itself, and it does not cause symptoms. Dense breast tissue can only be seen on a mammogram.
Each breast contains 15 to 20 lobes of glandular tissue, arranged like the petals of a daisy. The lobes are further divided into smaller lobules that produce milk for breast-feeding. Small tubes ducts conduct the milk to a reservoir that lies just beneath your nipple. After skin cancer, breast cancer is the most common cancer diagnosed in women in the United States. Breast cancer can occur in both men and women, but it's far more common in women.
Breasts are the same in men and women until puberty. They also have connective tissue, which includes adipose fatty tissue. These tissues make up the shape of your breasts. The only way to know if you have dense breasts is through a diagnostic mammogram.