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J Korean Med Sci.  2022 Apr;37(16):e131. 10.3346/jkms.2022.37.e131.

A Case of Myocarditis Presenting With a Hyperechoic Nodule After the First Dose of COVID-19 mRNA Vaccine

Affiliations
  • 1Department of Pediatrics, Jeonbuk National University Children’s Hospital, Jeonju, Korea
  • 2Research Institute of Clinical Medicine of Jeonbuk National University, Jeonju, Korea

Abstract

Myocarditis and/or pericarditis have been reported as adverse events following coronavirus disease 2019 (COVID-19) messenger RNA vaccination, with most cases occurring within 1 week after the second dose. We report a rare case of myocarditis after the first dose of the BNT162b2 (Pfizer-BioNTech) COVID-19 vaccine in a 17-year-old boy. Here, we describe the laboratory, electrocardiographic, and imaging findings of myocarditis.

Keyword

Myocarditis; mRNA Vaccines; Adolescent; COVID-19
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