Journal
CLINICAL NUCLEAR MEDICINE
Volume 46, Issue 5, Pages 433-434Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/RLU.0000000000003633
Keywords
FDG PET/CT; COVID-19; vaccination; lymph nodes
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A 68-year-old man with right cheek melanoma underwent F-18-FDG PET/CT, which showed FDG-avid lymph nodes in the left axilla post COVID-19 vaccination. These nodes were considered reactive to the vaccination. Although uncommon in the past, this finding becomes important with the increasing number of COVID-19 vaccinations.
A 68-year-old man with right cheek melanoma after resection underwent F-18-FDG PET/CT, which was unremarkable except for multiple FDG-avid subcentimeter but rounded lymph nodes in the left axilla. The patient had undergone a COVID-19 vaccination in the left arm 3 weeks prior. As under vaccinations have been documented to cause reactive FDG-avid lymph nodes, the nodes in our patient were considered benign, reactive to the COVID-19 vaccination. Although FDG-avid benign, reactive nodes have been an uncommon finding in the past, the upcoming surge in COVID-19 vaccinations makes this an important finding for the interpreting physician to consider and recognize.
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