Screening Mammography Radiation Risk 35% LESS Than Thought!

The low risks from radiation exposure during mammography screening may be even lower than experts have assumed, a new study contends. The new research estimates that the radiation dose from a screening mammogram is anywhere from 20 percent to 35 percent lower than previously thought.

Why? Because past estimates did not account for the uneven distribution of different types of tissue in a typical woman’s breasts. The study was performed at the University of California, Davis and presented at the American Association of Physicists in Medicine. Lead researcher Andrew Hernandez, a Ph.D. candidate, noted that “the breast is composed of skin, fat and glandular tissue, and it’s the glandular tissue that’s potentially at risk from radiation during mammography.”

Past estimates have assumed that fat and glandular tissue are distributed uniformly throughout the breast, but recent research has shown that the different tissue types are actually more “mixed” than originally thought. As such, glandular tissue is actually exposed to about 30 percent less radiation, on average, than assumed.

According to Hernandez, the lower radiation dose provides reassurance to women concerned about the radiation exposure risk versus benefit of screening mammography. It has long been known that modern mammography uses low doses of radiation, and that any risk from regular screening would be greatly outweighed by the benefit of catching breast cancer early.

However, this preliminary research suggest that “a very low risk is even lower than originally thought.”

At Digital Mammography Specialists (DMS), the highly experienced clinical staff adhered to the as low as reasonably achievable (ALARA principle) for mammography imaging. Utilizing digital 2D and 3D tomosynthesis mammography allows DMS to minimize the concern from radiation and ensure the best imaging study for detecting breast cancer.

Lower radiation risk is just one more positive reason for women to obtain their annual screening mammogram. Screening mammography saves lives!

About the author: Raja P. Reddy, MD is a board certified diagnostic radiologist specializing in breast imaging. He is also a contributing editor for Digital Mammography Specialists, a leading provider of outpatient women’s imaging services in the greater Atlanta, GA are

Screening Mammogram Starting at Age 40. Why It Works!

Recently, the American Cancer Society (ACS) announced its new screening guidelines that increase the age for annual mammograms for women of average risk from 40 to 45 years of age and biennial screening for all women between the ages of 55 to 74. ACS also stated that doctors should no longer perform clinical breast exams.

Retrospective analysis of numerous research studies led to this conclusion, HOWEVER the conclusion essentially ignores the basic fact and single most important message: MAMMOGRAMS SAVE LIVES. Period. End of story. The importance of receiving annual mammograms, beginning at age 40 — and possibly earlier for women with a history of breast cancer — is obvious. 1 in 8 (12%) women in the US will develop invasive breast cancer during their lifetime. Screening mammography is our best tool in the early detection of breast cancer. Catching cancer at its earliest stages leads to higher cure rates and decreased deaths. No one is disputing these simple facts.

U.S. breast cancer deaths have fallen 34 percent in the past 20 years — from 33 to 22 per 100,000 women between 1990 and 2011. And that represents 200,000 lives saved! At present, there are no tests to replace mammography. It is a crucial and life-saving tool in the fight against breast cancer.

The trouble with these new recommendations is that many women do not know if they are at “average” risk because they are not informed about their family history. This creates a false sense of security and puts many at risk by telling women they have an additional 5 years to be screened.

The longer women take to be diagnosed with breast cancer the more costly and painful the treatments and options. We should be encouraging detection, not discouraging it especially when the incidents of breast cancer are still at alarming numbers. With the high costs of health care, these new directives by the American Cancer Society will be viewed as an attempt to cut costs under the guise of best practices and its effect may put more lives at risk.

One major “harm” cited was the anxiety that could accompany a false-positive mammogram. The panel members reasoned that reducing anxiety by reducing screening was reasonable, which would allow women to die unnecessarily. To suggest that “anxiety” or “potential harm from false positives readings” is reason enough to change the screening guidelines is a misrepresentation. Today’s 3D tomosynthesis technology is reducing call backs and directly reducing false positives and unnecessary procedures. At Digital Mammography Specialists (DMS), our call back rates have dropped over 20% using 3D mammography. Instead of changing the guidelines, we should be aggressively promoting utilization of the latest technology in breast cancer screening for women starting at age 40.

All medical care is based on “overtreatment” since we are still unable to accurately predict who will benefit with certainty from any medical intervention. Regardless, screening leads to early detection, which saves lives. Screening is not responsible for “overdiagnosis.” Women should not be deprived of life-saving screening because of the cost or that the tool is not perfect in detection.

In conclusion, we need to stop the confusion. Of note, the ACS guidelines say that health insurers should cover all mammograms, regardless of the age of the patient or the frequency of the screening. The American College of Radiology (ACR) and Digital Mammography Specialists recommends screening mammography should begin at age 40. The evidence supports early detection. Screening mammography starting at age 40 is our best tool in the fight against breast cancer. It works!

About the author: Raja P. Reddy, MD is a board certified diagnostic radiologist specializing in breast imaging. He is also a contributing editor for Digital Mammography Specialists, a leading provider of outpatient women’s imaging services in the greater Atlanta, GA area