PT - JOURNAL ARTICLE AU - Mathew V Smith AU - Ming Yang TI - Reactive Axillary Lymphadenopathy to COVID-19 Vaccination on F18-FDG PET/CT AID - 10.2967/jnmt.121.262008 DP - 2021 Apr 01 TA - Journal of Nuclear Medicine Technology PG - jnmt.121.262008 4099 - http://tech.snmjournals.org/content/early/2021/04/02/jnmt.121.262008.short 4100 - http://tech.snmjournals.org/content/early/2021/04/02/jnmt.121.262008.full 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.