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Looks like Covid vaccines are causing a breast cancer scare.

COVID-19 Vaccine Can Cause ‘False Positives’ on Breast Cancer Mammograms

https://www.healthline.com/health-news/covid-19-vaccine-can-cause-false-positives-on-breast-cancer-mammograms

March 2, 2021

HEALTH NEWS
Written by Ann Pietrangelo on March 2, 2021 — Fact checked by Maria Gifford

Experts say breast cancer screenings can be delayed after getting a COVID-19 vaccination, but diagnostic mammograms should not be postponed.

Researchers say swollen lymph nodes caused by COVID-19 vaccination can produce “false positives” in breast cancer mammograms.
Some medical facilities are delaying breast cancer screenings for 4 to 6 weeks after getting the vaccination.
However, experts say a diagnostic exam being done after breast cancer symptoms are discovered should not be postponed.
One potential side effect of the COVID-19 vaccine is swollen lymph nodes.

It’s normal and it’s temporary, but it can lead to unclear mammogram results.

Articles published in the journals Clinical Imaging and Radiology detail several cases of unclear mammogram readings following COVID-19 vaccinations.

In some of those cases, people underwent more imaging tests or biopsies.

The swollen lymph nodes occurred under the arm or near the collarbone on the same side of the body where the vaccine was administered.

“We have observed swollen lymph nodes in the armpit of many women following the COVID-19 vaccine,” said Dr. Emily Sonnenblick, a breast imaging radiologist at the Dubin Breast Center at Mount Sinai Hospital as well as an associate professor of radiology at the Icahn School of Medicine at Mount Sinai in New York.

“Lymph nodes are part of the body’s immune system. They swell as a normal response to a foreign substance, such as vaccine or infection,” she added.


Swollen lymph nodes and mammography
Radiologists look for suspicious changes in the breast and armpit.

Enlarged lymph nodes can be a sign of cancer.

“But an isolated swollen lymph node in the absence of known breast cancer is a rare first sign of cancer,” Sonnenblick told Healthline.

Dr. Clayton Taylor is a breast radiologist with The Ohio State University Comprehensive Cancer Center – Arthur G. James Cancer Hospital and Richard J. Solove Research Institute.

Taylor told Healthline that it’s too soon to know how common swollen lymph nodes are after a COVID-19 vaccination. There’s also uncertainty how they might be seen on a screening mammogram and cause a false-positive result.

“However, from our experience since January of this year, the risk of a false-positive screening mammogram from a swollen lymph node associated with COVID-19 vaccination seems very small, as long as we collect information from our patients regarding COVID-19 vaccination status at the time of their appointment,” Taylor said.

“If a swollen lymph node from COVID-19 vaccination was identified on a screening mammogram and found to require further evaluation, we would ask the patient to return for a focused ultrasound evaluation of this area,” he added.