Radiol Case Rep 2022 Sep 17;17(9):2996-2999. Epub 2022 Jun 17.
Unit of Diagnostic Imaging and Interventional Radiology, Fondazione Policlinico Campus Bio-Medico di Roma, Università Campus Bio-Medico di Roma, via Alvaro del Portillo 21, Rome 00128, Italy.
Several cases of cancer patients with 18-fluorodeoxyglucose (FDG) Positron Emission Tomography/Computed Tomography (PET/CT) evidence of metabolically active axillary lymph nodes after COVID-19 vaccination have been described, creating a diagnostic dilemma and sometimes leading to further unnecessary examinations. A 62-year-old male, diagnosed with prostate cancer, treated with hormone-therapy and radiotherapy of the prostate 2 years before, underwent fluorine-18 choline (F-FCH) PET/CT for restaging purpose, less than 3 weeks after he had received the second dose of the Pfizer BioNTech-BNT162b2 mRNA COVID-19 vaccine. This exam showed an increased F-FCH uptake and an enlargement of the left axillary, paratracheal, para-aortic, subcarinal, and hilar bilateral lymph nodes. Read More