Troy Williams, MD  Board Certified OBGYN - Director of Trillium Medical Corporation
OBGYN Newsletter July 2013
Breast Density on Mammogram
 
Dear Friends,
 
As the reports begin to arrive in regards to the requirement to inform patients of their dense breasts, there are several things that I would like to share with you. Ultimately, the modifications to include density awareness will lead to better screening and safety for patients.

What is breast density?

Breast density is a measure used to describe the proportion of the different tissues that make up a woman's breasts. Breast density compares the area of breast and connective tissue seen on a mammogram to the area of fat. Breast and connective tissue are denser than fat and this difference shows up on a mammogram.
High breast density means there is a greater amount of breast and connective tissue compared to fat.
Low breast density means there is a greater amount of fat compared to breast and connective tissue.

Breast density and breast cancer risk

Women with high breast density (as seen on a mammogram) are four to five times more likely to get breast cancer than women with low breast density.   
How do health care providers use breast density?
At this time, health care providers do not routinely use a woman's breast density to assess her breast cancer risk. This is mainly due to the lack of a standard measure of breast density. While a measure of breast density may be recorded on a mammography report, this measure is not used to assess risk. However, by looking at your mammogram or the measure of breast density, your provider may conclude that you have dense breasts and may suggest other types of breast screening.
Some states in the U.S. now have laws requiring that mammography reports include whether or not women have dense breasts. Although it seems like including this information should be helpful, currently there are no special recommendations or screening guidelines for women with dense breasts. In addition, although women with dense breasts appear to be at higher risk of breast cancer, it is not clear that lowering breast density will decrease risk. For example, getting older and gaining weight after menopause are both related to a decrease in breast density, but are also related to an increase in breast cancer risk.

Screening for women with dense breasts
Digital mammography:

For women with high breast density, digital mammography  may offer screening benefits over film mammography. Tumors in women with dense breasts can be easier to find with digital mammography than with film mammography. Most mammography centers now use digital mammography to screen all women.

Ultrasound and MRI

Ultrasound and MRI (in combination with mammography) are being studied to learn whether they improve detection in women with dense breasts compared to mammography alone.

As always, if you have any questions or would like to schedule an appointment, feel free to call my office at 818-597-9300.
 
Sincerely,

Dr. Troy Williams, MD
 
 
 
 
 
 
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Dr. Troy Williams MD, OBGYN
32144 Agoura Rd., Suite #207
Westlake Village, CA 91361
(818) 597-9300
 
 
 
 
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