RT Journal Article SR Electronic T1 Reactive Axillary Lymphadenopathy to COVID-19 Vaccination on 18F-FDG PET/CT JF Journal of Nuclear Medicine Technology JO J. Nucl. Med. Technol. FD Society of Nuclear Medicine SP 286 OP 287 DO 10.2967/jnmt.121.262008 VO 49 IS 3 A1 Smith, Mathew V. A1 Yang, Ming YR 2021 UL http://tech.snmjournals.org/content/49/3/286.abstract AB In this report, we present 18F-FDG PET/CT findings of reactive left axillary and supraclavicular hypermetabolic lymphadenopathy, as well as ipsilateral deltoid muscle injection site radiotracer uptake, related to recent coronavirus disease 2019 (COVID-19) vaccination in a patient with osteosarcoma. With the growing number of patients receiving COVID-19 vaccine, recognition of benign characteristic 18F-FDG PET/CT image findings will ensure staging and restaging accuracy and avoid unnecessary biopsy.