Antwi, Kwadwo; Caobelli, Federico; Kudura, Ken; Buchholz, Hans-Georg; Hoffmann, Martin; Schreckenberger, Mathias (2022). Hypermetabolic Ipsilateral Supraclavicular and Axillary Lymphadenopathy: Optimal Time Point for Performing an 18F-FDG PET/CT after COVID-19 Vaccination. Diagnostics, 12(12) MDPI 10.3390/diagnostics12123073
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BACKGROUND
We aimed to evaluate the incidence of severe acute respiratory syndrome coronavirus type-2 (SARS-CoV2) vaccine-related hypermetabolic lymphadenopathy (HLA) and evaluate which time point produces the least number of false-positive findings in an 18F-2-Fluor-2-desoxy-D-glucose positron emission tomography/computed tomography (18F-FDG PET/CT).
METHODS
For this retrospective, multi-center imaging study, patients with any form of SARS-CoV2 vaccination prior to an 18F-FDG-PET/CT were included between January 2021 and December 2021. Patients were divided into six groups according to the time point of vaccination prior to their 18F-FDG-PET/CT imaging, e.g., group one (0-6 days) and group six (35-80 days). As the reference standards, the SUVmax of the mediastinal blood pool (MBP) and the SUVmax contralateral reference lymph node (RL) were determined. (A) The absolute SUVmax of HLA, (B) the ratio of SUVmaxHLA/SUVmax mediastinal blood pool (rHLA/MBP), (C) the ratio SUVmax HLA vs. SUVmax contralateral reference lymph node (rHLA/RL), (D) and the incidence of HLA defined as rHLA/MBP > 1.5 were assessed.
RESULTS
Group one (days 0-6) showed the highest incidence of HLA 16/23 (70%) and rHLA/MBP (2.58 ± 2.1). All three parameters for HLA reduced statistically significantly in the comparison of Groups 1-3 (days 0-20) versus Groups 4-6 (days 21-80) (p-values < 0.001).
CONCLUSIONS
If feasible, an FDG PET should be postponed by at least 3 weeks after SARS-CoV2 vaccination, especially if an accurate evaluation of axillary status is required.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
04 Faculty of Medicine > Department of Radiology, Neuroradiology and Nuclear Medicine (DRNN) > Clinic of Nuclear Medicine |
UniBE Contributor: |
Caobelli, Federico |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
2075-4418 |
Publisher: |
MDPI |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
09 Jan 2023 11:02 |
Last Modified: |
10 Jan 2023 15:09 |
Publisher DOI: |
10.3390/diagnostics12123073 |
PubMed ID: |
36553080 |
Uncontrolled Keywords: |
18F-FDG PET/CT COVID-19 vaccination HLA hypermetabolic ipsilateral supraclavicular and axillary lymphadenopathy |
BORIS DOI: |
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URI: |
https://boris.unibe.ch/id/eprint/176505 |
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