Isolated unilateral axillary lymphadenopathy diagnosed in a teenager by
ultrasonography after BNT162b2 COVID-19 vaccination
- TAKAYUKI YAMADA
, - Susumu Ohwada
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.01 Feb 2022Published in The Kitakanto Medical Journal volume 72 issue 1 on pages 87-89. 10.2974/kmj.72.87 
