Axillary lymphadenopathy, a common adverse effect of COVID-19 vaccination, is seen in 44 percent of patients undergoing breast imaging after vaccination, according to a study published in the May issue of Radiology. Stacey Wolfson, M.D., from the New York University Grossman School of Medicine in New York City, and colleagues examined the outcomes of axillary lymphadenopathy among patients who received the COVID-19 vaccine and underwent breast imaging between Dec. 30, 2020, and April 12, 2021. The researchers found that 44 percent of the 1,217 patients who received the COVID-19 vaccine and underwent breast imaging had lymphadenopathy during at least one...