RT Journal Article SR Electronic T1 Reactive Axillary Lymphadenopathy to COVID-19 Vaccination on F18-FDG PET/CT JF Journal of Nuclear Medicine Technology JO J. Nucl. Med. Technol. FD Society of Nuclear Medicine SP jnmt.121.262008 DO 10.2967/jnmt.121.262008 A1 Mathew V Smith A1 Ming Yang YR 2021 UL http://tech.snmjournals.org/content/early/2021/04/02/jnmt.121.262008.abstract AB In this report, we present FDG PET/CT findings of reactive left axillary and supraclavicular hypermetabolic lymphadenopathy, as well as ipsilateral delta muscle injection site radiotracer uptake related to recent COVID-19 vaccination in a patient with osteosarcoma. With growing number of patients receiving COVID-19 vaccine, recognition of benign characteristic FDG PET/CT image findings will ensure staging/restaging accuracy and avoid unnecessary biopsy.