By Whitney J. Palmer

Swollen lymph nodes visualized on mammography and ultrasound appear days post-vaccination and could be mistaken for malignancies. Patients who receive either the Pzifer-BioNTech or Moderna COVID-19 vaccine can experience swollen lymph nodes that could be mistaken for breast malignancies, new research has found.

In an article featuring four case studies, published this week in Clinical Imaging, investigators from Weill Cornell Medical Center/New York Presbyterian outlined the appearance of new unilateral axillary adenopathies seen on ultrasound in patients who recently received the first dose of the vaccine.

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