Mammogram During Pregnancy: Your Safety, Options and More

You scheduled your first breast cancer screening, then you learned some exciting news. You’re expecting a new little one! You may be wondering whether to have your mammogram during pregnancy or to wait until you’ve settled into life with your new baby. 

“More women are having children later in life, which increases the risk of breast cancer,” says Dr. Georges Sylvestre, maternal and fetal medicine specialist at Weill Cornell Medicine. “So, if a 42-year-old woman walks into my office with a high risk of breast cancer and never had a mammogram, I’ll discuss the possibility of a mammogram with her.” 

Is a Mammogram Safe During Pregnancy?  

Mammography is a breast imaging technique that takes X-ray images of the breast tissue. It’s helpful in detecting breast cancer, often before symptoms arise. However, mammography relies on radiation.  

If you’re afraid this radiation exposure puts you at risk, Dr. Sylvestre has some reassuring information. 

“Screening mammograms are absolutely not dangerous,” Dr. Sylvestre says, “but they’re not quite as sensitive during pregnancy.” 

Your provider makes your mammogram while pregnant safer by placing a lead shield over your belly. Before making your decision, talk with your health provider about the pros and cons. Ask whether breast screening is recommended for you during pregnancy.  

Breast Screening Options During Pregnancy 

Though a mammogram during pregnancy is considered safe, you have options. Other types of breast screenings include: 

  • Breast MRI. Large magnets are used to produce images of the breast. For clarity, your provider may inject you with a special contrast material. This can cross the placenta and, in lab animals, has been linked with fetal abnormalities, according to the American Cancer Society. Because of this, breast MRI is generally not recommended during pregnancy. 
  • Breast ultrasound. Sound waves help produce images of breast tissue without exposing you or your growing baby to radiation. If you notice a change in your breast, an ultrasound can help uncover the cause. 

If Not Now, Then When? 

When to have a mammogram is a personal choice you should make with your women’s health provider. Breastfeeding is also. If you choose to breastfeed, you may want to wait even longer for your breast screening. A mammogram may be less accurate due to pregnancy and lactation.  

“If you’re at high risk for breast cancer, it’s totally reasonable to offer breast cancer screening with a mammogram during pregnancy,” Dr. Sylvestre says. “It’s also reasonable to wait if you’re not at high risk, as mammogram sensitivity will improve three or four months after you stop nursing.”  

Conclusion 

If you’re considering whether to have a mammogram during pregnancy, remember these key takeaways. 

  • Mammography is safe for pregnant women, and the American Cancer Society states that it’s rare to experience breast cancer during pregnancy. Talk with your care provider to determine whether to have your screening now or later. 
  • You have screening options besides mammograms during pregnancy and breastfeeding. Ultrasound is a safe alternative that may help find the cause of breast changes. 
  • For the most accurate postpartum mammogram experience, wait a few months until you finish breastfeeding. 
Are you experiencing a change in your breast? Find a doctor at Weill Cornell Medicine to determine the cause and develop a treatment plan.