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COVID-19 vaccine related hypermetabolic lymph nodes on PET/CT:Implications of inflammatory findings in cancer imaging

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Oncology Research 2023年第2期31卷 117-124页

作者： FERDINANDO CALABRIA ANTONIO BAGNATO GIULIANA GUADAGNINO MARIA TOTEDA ANTONIO LANZILLOTTA STEFANIA CARDEI ROSANNA TAVOLARO mario leporace Department of Nuclear Medicine and Theragnostics Mariano Santo HospitalCosenza87100Italy Department of Infectious and Tropical Diseases St.Annunziata HospitalCosenza87100Italy

We observed several patients presenting 2-[^(18)F]FDG uptake in the reactive axillary lymph node at PET/CT imaging,ipsilateral to the site of the COVID-19 vaccine *** finding was documented at[^(18)F]Choline PET/*** aim of our study was to describe this source of false positive *** patients examined by PET/CT were included in the *** concerning patient anamnesis,laterality,and time interval from recent COVID-19 vaccination were *** was measured in all lymph nodes expressing tracer uptake after *** 712 PET/CT scans with 2-[^(18)F]FDG,104 were submitted to vaccination;89/104 patients(85%)presented axillary and/or deltoid tracer uptake,related to recent COVID-19 vaccine administration(median from injection:11 days).The mean SUVmax of these findings was 2.1(range 1.6–3.3).Among 89 patients with false positive axillary uptake,36 subjects had received chemotherapy due to lymph node metastases from somatic cancer or lymphomas,prior to the scan:6/36 patients with lymph node metastases showed no response to therapy or progression *** mean SUVmax value of lymph nodal localizations of somatic cancers/lymphomas after chemotherapy was *** 1/31 prostate cancer patients examined by[^(18)F]Choline PET/CT showed post-vaccine axillary lymph node *** findings were not recorded at PET/CT scans with[^(18)F]-6-FDOPA,[^(68)Ga]Ga-DOTATOC,and[^(18)F]-*** COVID-19 mass vaccination,a significant percentage of patients examined by 2-[^(18)F]FDG PET/CT presents axillary,reactive lymph node ***,low-dose CT,and ultrasonography facilitated correct ***-quantitative assessment supported the visual analysis of PET/CT data;SUVmax values of metastatic lymph nodes were considerably higher than post-vaccine lymph nodes.[^(18)F]Choline uptake in reactive lymph node after vaccination was *** the COVID-19 pandemic,nuclear physicians need to take these potential false positive cases

关键词： [^(18)F]Choline 2-[^(18)F]FDG PET/CT COVID-19 Vaccine Italy Chemotherapy Inflammation SUVmax

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