Why Should Mammography Begin in the 40s?

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The ideal age for mammography was previously recommended as 50 and older. However, the American Cancer Society now emphasizes that the first mammogram should be performed before age 45. We recommend mammography screening from age 40 to improve the chance of successful treatment through early diagnosis.
What Is Mammography?
Mammography is an X-ray image of the breast, a specialized breast X-ray, also called a mammogram. We use it to look for early radiological signs of breast cancer. Regular mammograms are the best testing method for detecting breast cancer early.
How Often Should Mammography Be Performed?
Cancer risk increases with age. Although breast cancer generally occurs in women over 50, starting screening before age 50 may be vital for early diagnosis.
According to the American Cancer Society’s 2017 update of its early cancer screening guideline:
- Women should undergo mammography screening from age 45; between ages 45-54, annually; women aged 40 to 44 who wish should also be offered annual screening.
- Women over 55 should move to screening every two years or be offered annual screening if preferred; mammography screening should continue while their general health is good and life expectancy is ≥ 10 years.
However, people with a family history of breast cancer should discuss starting screening earlier with their physicians.
Why Is Regular Mammography Needed from the 40s?
- Of every 6 breast cancers, 1 occurs in women aged 40-49.
- Of every 4 women diagnosed with breast cancer, 3 have no family history.
- Since mammography became widely used in the 1990s, breast cancer deaths have declined by 1/3.
No test can yet replace mammography. Having a mammogram may not feel comfortable, but early diagnosis and appropriate cancer treatment are very important for recovery. Early diagnosis through mammography may sometimes allow treatment with only a small operation, without even needing chemotherapy. Treatment can therefore be faster and easier without a larger operation. Mammography not only saves lives but also helps preserve quality of life. We recommend staying aware and undergoing screening regularly.
You May Be Interested In:
Sources
Cancer screening in the United States, 2017: A review of current American Cancer Society guidelines and current issues in cancer screening.
CA: A Cancer Journal for Clinicians (2017)
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