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. 2021 Jul 12;10(7):652. doi: 10.3390/biology10070652

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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69-year-old female with palpable unilateral sopraclavicolar adenopathy noted 3 days after receiving the first dose of the AstraZeneca COVID-19 vaccine in her left deltoid muscle. (a) B-mode sonogram image shows round lymph node with asymmetric cortical thickening and hilum evidence. (b) SMI image shows central and peripheral vascularization. (c) Elastonography strain shows similar pattern of the node compared to surrounding tissue. (d) After 1 month, the cortical thickening appears uniform, with hilum evidence.