NPR

Coronavirus FAQs: Mammograms, Vaccine Ingredients ... And Dogs Who Sniff Masks

Are there issues with having a mammogram right after a vaccine? Is there a list of vaccine ingredients — some people say they're scary. Also: My pooch loves to sniff discarded masks. Should I worry?
Source: Malaka Gharib/ NPR

I'm eligible for the COVID vaccine and due for a mammogram. Which should I do first?

Definitely do both, says Dr. Lars Grimm, associate professor of radiology at Duke University. But if you can, schedule the mammogram either before the vaccine or 4-6 weeks after the second dose, in keeping with new recommendations from the Society of Breast Imaging.

That's because swollen lymph nodes are both a common side effect of the vaccines and can also be a marker of early breast cancer, he says — especially when lymph nodes on only one side are swollen.

"It can be the only sign we see," he says, noting that a mammogram often detects swelling that a person wouldn't notice. Of course, other things cause

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