When to schedule a mammography if you receive the COVID-19 vaccine

Individuals who are planning a screening mammography should schedule their imaging to be done at least one day before the first dose or at least two weeks after the second dose of COVID-19 vaccination.

It is not unusual for some individuals to notice temporary lymph node swelling after receiving their COVID-19 vaccine. This is a positive sign that an individual’s immune system is responding to the vaccine, but it can also artificially complicate the picture on the mammogram.

By scheduling your mammogram at least one day before your first dose or at least two weeks after your second dose of the COVID-19 vaccine, this will help prevent the need for repeat appointments that are sometimes needed when normal lymph nodes temporarily appear more prominent after vaccination.

If you experience any lymph node or armpit swelling, contact your health care provider or mammography clinic. They will take into consideration your vaccination schedule and work with you to schedule a mammogram that will result in the most accurate imaging.

If you have already undergone a mammogram that occurred between your first and second dose of COVID-19 vaccine, and are experiencing swelling, contact your health care provider or mammography clinic. If enlarged lymph nodes were detected on your mammogram, you may be asked to return for additional imaging after a few weeks to allow any enlarged lymph nodes to return to normal.

More information is available from the Society of Breast Imaging.