E-ISSN: 2147-1959
Increased <sup>18</sup>F-FDG Uptake in the Axillary Lymph Nodes of the Vaccinated Side Associated with COVID-19 Vaccination
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VOLUME: 31 ISSUE: 2
P: 169-171
June 2022

Increased 18F-FDG Uptake in the Axillary Lymph Nodes of the Vaccinated Side Associated with COVID-19 Vaccination

Mol Imaging Radionucl Ther 2022;31(2):169-171
DOI: 10.4274/mirt.galenos.2021.22590
Yoichi Otomi 1
Saho Irahara 1
Hiroaki Inoue 2
Takayoshi Shinya 1
Hideki Otsuka 1
Masafumi Harada 1
1. Tokushima University, Department of Radiology, Tokushima, Japan
2. Tokushima University, Department of Thoracic and Endocrine Surgery and Oncology, Tokushima, Japan
No information available.
No information available
Received Date: 02.04.2021
Accepted Date: 12.05.2021
Publish Date: 27.06.2022
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ABSTRACT

A 50-year-old female patient underwent (18fluorine-fluorodeoxyglucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) following modified radical mastectomy for cancer of the left breast. Ten days before the PET/CT, the coronavirus disease-2019 (COVID-19) vaccine was injected intramuscularly into the right deltoid muscle. Increased (18F-FDG uptake of maximum standardized uptake value (11.0) was observed in the lymph nodes of the right axilla, which had not been observed in the previous PET/CT. The size of the oval-shaped lymph nodes was up to approximately 11×9 mm; however, it was larger than that observed on the previous PET/CT. We contemplate that the increased (18F-FDG uptake was a reactive change in the lymph nodes associated with the COVID-19 vaccine.

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