breast cancer screenings for women 40 and older
Women are now advised to get a mammogram every other year starting at age 40 and until age 74, according to new recommendations from the US Preventive Services Task Force.
The USPSTF, a volunteer panel of independent medical experts whose recommendations help guide doctors’ decisions and influence insurance plans, previously recommended that biennial mammograms start by age 50 and the decision for women to screen in their 40s “should be an individual one.”
These new recommendations, published Tuesday in the medical journal JAMA, replace the task force’s 2016 recommendations. Some groups, such as the American Cancer Society, have already recommended for women to start mammograms in their 40s
The updated USPSTF recommendations apply to everyone assigned female at birth, including cisgender women, transgender men and nonbinary people at average risk of breast cancer, as well as those with a family history of breast cancer or dense breasts.
The updated recommendations do not apply to people with a personal history of breast cancer, a genetic marker or syndrome that may put them at a high risk of breast cancer, such as the BRCA1 or BRCA2 genes, or those with a history of high-dose radiation therapy to the chest or a history of a high-risk breast lesions. These patients should either stay on the plan outlined by their physician or talk to their doctor about what’s best for them.
“We make this new updated recommendation because the latest science clearly shows that starting at age 40 and obtaining a mammogram every other year until age 74 can further reduce deaths in breast cancer,” said USPSTF Chair Dr. Wanda Nicholson, a senior associate dean and professor at George Washington University’s Milken Institute School of Public Health.
The benefit of screening for breast cancer is that it can help diagnose cases early, before the cancer has spread, which reduces the risk of dying from the disease.
Breast cancer is the second most common cancer in women in the United States, after skin cancer, and it’s the second-leading cause of cancer death, after lung cancer.
“We can save even more lives — up to nearly 20% more lives — with this updated strategy,” Nicholson said about the new recommendations.
Why not screen every year?
About 1 in 8 women will develop invasive breast cancer in their lifetime, according to the American Cancer Society, and mammography — taking an X-ray of the breast — remains the best tool to screen for and detect the disease.
The USPSTF has received some criticism for recommending to screen every other year, and not annually.
“Using USPSTF terminology, annual screening is just as ‘efficient’ as biennial screening but produces greater overall reductions in late-stage disease and deaths due to breast cancer, and greater gains in years of life saved,” Dr. Wendie Berg, of the University of Pittsburgh School of Medicine, wrote in an editorial published Tuesday in the journal JAMA Oncology. She added that “it is surprising” the USPSTF recommends biennial rather than annual screening.
“The updated USPSTF recommendations are an important step forward, but they stop short. Annual mammography is as efficient as biennial mammography but with greater overall gains in years of life saved,” Berg wrote. “Annual screening is particularly important for premenopausal women, especially women in racial and ethnic minority groups.”
Along with recommending biennial screening, there are other concerns around how the USPSTF makes blanket recommendations for people at average risk as well as those with a family history of breast cancer or dense breasts, said Molly Guthrie, vice president of policy and advocacy at the breast cancer foundation Susan G. Komen.
About half of women older than 40 in the United States have dense breast tissue, according to the US Food and Drug Administration, which last year updated mammography regulations to require that all US screening facilities notify patients about the density of their breasts with their mammography results.
“We were really surprised to see how they broke out their intended audiences and it doesn’t reflect what is standard today as far as identifying those people that are at high risk of breast cancer,” Guthrie said. “I fear that that’s going just to further muddy the water on what people are supposed to do.”
Some experts say that people with a direct family history of breast cancer or with dense breasts should have different screening recommendations, as both factors have been associated with an increased risk of developing breast cancer. That’s why, Guthrie said, it’s best for women to have conversations with their doctors about their own personal medical and family history and what might be best for them individually.
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