Isolated unilateral axillary lymphadenopathy diagnosed in a teenager by ultrasonography after BNT162b2 COVID-19 vaccination
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Abstract
Axillary lymphadenopathy is a local reaction to mRNA COVID-19 vaccination. A 19-year-old healthy woman presented with a mass in the axilla diagnosed by ultrasonography as vaccine-induced hyperreactive lymphadenopathy. After two weeks, ultrasonography revealed that the lymph node had shrunk and that the blood flow signal in the hilum had disappeared.
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- last seen: 2026-05-19T01:45:01.086888+00:00