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Updated: Nov 10, 2025
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Reactive Axillary Lymphadenopathy to COVID-19 Vaccination on 18F-FDG PET/CT
1Department of Radiology, Mayo Clinic, Scottsdale, Arizona.
Abstract:
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.
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