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Characterization of hypermetabolic lymph nodes after SARS-CoV-2 vaccination using PET-CT derived node-RADS, in patients with melanoma
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Characterization of hypermetabolic lymph nodes after SARS-CoV-2 vaccination using PET-CT derived node-RADS, in patients with melanoma
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Characterization of hypermetabolic lymph nodes after SARS-CoV-2 vaccination using PET-CT derived node-RADS, in patients with melanoma
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Journal Article
Characterization of hypermetabolic lymph nodes after SARS-CoV-2 vaccination using PET-CT derived node-RADS, in patients with melanoma
2023
Overview
This study aimed to evaluate the diagnostic accuracy of Node Reporting and Data System (Node-RADS) in discriminating between normal, reactive, and metastatic axillary LNs in patients with melanoma who underwent SARS-CoV-2 vaccination. Patients with proven melanoma who underwent a 2-[
18
F]-fluoro-2-deoxy-D-glucose positron emission tomography/computed tomography (2-[
18
F]-FDG PET/CT) between February and April 2021 were included in this retrospective study. Primary melanoma site, vaccination status, injection site, and 2-[
18
F]-FDG PET/CT were used to classify axillary LNs into normal, inflammatory, and metastatic (combined classification). An adapted Node-RADS classification (A-Node-RADS) was generated based on LN anatomical characteristics on low-dose CT images and compared to the combined classification. 108 patients were included in the study (54 vaccinated). HALNs were detected in 42 patients (32.8%), of whom 97.6% were vaccinated. 172 LNs were classified as normal, 30 as inflammatory, and 14 as metastatic using the combined classification. 152, 22, 29, 12, and 1 LNs were classified A-Node-RADS 1, 2, 3, 4, and 5, respectively. Hence, 174, 29, and 13 LNs were deemed benign, equivocal, and metastatic. The concordance between the classifications was very good (Cohen’s
k
: 0.91, CI 0.86–0.95;
p
-value < 0.0001). A-Node-RADS can assist the classification of axillary LNs in melanoma patients who underwent 2-[
18
F]-FDG PET/CT and SARS-CoV-2 vaccination.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ COVID-19
/ COVID-19 - diagnostic imaging
/ Glucose
/ Humanities and Social Sciences
/ Humans
/ Lymph Nodes - diagnostic imaging
/ Lymphatic Metastasis - pathology
/ Melanoma
/ Melanoma - diagnostic imaging
/ Positron emission tomography
/ Positron Emission Tomography Computed Tomography - methods
/ Science
