. 2022; 31(2): 169-171 | |||
Increased 18F-FDG uptake in the axillary lymph nodes of the vaccinated side associated with COVID-19 vaccinationYoichi Otomi1, Saho Irahara1, Hiroaki Inoue2, Takayoshi Shinya1, Hideki Otsuka1, MASAFUMI HARADA11Department of Radiology, Tokushima University, Tokushima, Japan2Department of Thoracic and Endocrine Surgery and Oncology, Tokushima University, Tokushima, Japan A 50-year-old female patient underwent 18F-FDG PET/CT following modified radical mastectomy for cancer of the left breast. Ten days before the PET/CT, the COVID-19 vaccine was injected intramuscularly into the right deltoid muscle. Increased 18F-FDG uptake of SUVmax (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 FDG uptake was a reactive change in the lymph nodes associated with the COVID-19 vaccine. Keywords: COVID-19, vaccination, 18F-FDG PET/CTYoichi Otomi, Saho Irahara, Hiroaki Inoue, Takayoshi Shinya, Hideki Otsuka, MASAFUMI HARADA. Increased 18F-FDG uptake in the axillary lymph nodes of the vaccinated side associated with COVID-19 vaccination. . 2022; 31(2): 169-171 Corresponding Author: Yoichi Otomi, Japan |
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