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Published in: European Journal of Nuclear Medicine and Molecular Imaging 10/2021

01-09-2021 | NSCLC | Original Article

18F-FDG PET/CT and circulating tumor cells in treatment-naive patients with non-small-cell lung cancer

Authors: Fengxian Zhang, Xiaodong Wu, Junjie Zhu, Yan Huang, Xiao Song, Lei Jiang

Published in: European Journal of Nuclear Medicine and Molecular Imaging | Issue 10/2021

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Abstract

Purpose

This study retrospectively investigated the clinical utility of 2-deoxy-18F-fluorodeoxyglucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) and circulating tumor cells (CTCs) in the diagnosis and prognosis of treatment-naive patients with non-small-cell lung cancer (NSCLC).

Methods

The blood samples of treatment-naive patients with NSCLC were collected for CTCs detection, and the tumor metabolic parameters of 18F-FDG PET/CT, including maximum standard uptake value (SUVmax), metabolic tumor volume of primary lesion (MTV-P) and combination of primary lesion and metastases (MTV-C), and total lesion glycolysis of primary lesion (TLG-P) and combination of primary lesion and metastases (TLG-C), were analyzed. Age, sex, smoking, serum tumor markers, tumor size, location, TNM stage, and genetic mutations were also reviewed. Moreover, progression-free survival (PFS) and overall survival (OS) of these patients were analyzed.

Results

A total of 309 patients with NSCLC (200 men, 109 women; mean age: 61 ± 9 years) were enrolled in this study, including 217 patients with adenocarcinoma and 92 with squamous cell carcinoma. Of the 309 cases, 11 were misdiagnosed with benign diseases by 18F-FDG PET/CT. CTCs positivity was detected in 234 cases. The sensitivity of 18F-FDG PET/CT and CTCs in NSCLC were 96.4% and 75.7%, respectively. SUVmax, MTV-P, TLG-P, MTV-C, TLG-C, tumor size, and serum CYFRA211 levels were significantly higher in CTCs positive group than negative group; and advanced TNM stage, squamous cell carcinoma, and EGFR wild type presented higher CTCs positivity. Multivariate logistic regression analysis revealed that SUVmax was significantly associated with CTCs positivity. Multivariate cox regression analysis showed that TLG-P, TLG-C, and CTCs were independent predictors of PFS in patients with NSCLC, and TLG-C and CTCs were independent predictors of OS.

Conclusions

18F-FDG PET/CT was superior to CTCs in the diagnosis of treatment-naive patients with NSCLC. The levels of CTCs in the peripheral blood were associated with tumor glucose metabolism in NSCLC. Metabolic parameters of 18F-FDG PET/CT and CTCs could separately predict the outcomes of treatment-naive patients with NSCLC.
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Metadata
Title
18F-FDG PET/CT and circulating tumor cells in treatment-naive patients with non-small-cell lung cancer
Authors
Fengxian Zhang
Xiaodong Wu
Junjie Zhu
Yan Huang
Xiao Song
Lei Jiang
Publication date
01-09-2021
Publisher
Springer Berlin Heidelberg
Published in
European Journal of Nuclear Medicine and Molecular Imaging / Issue 10/2021
Print ISSN: 1619-7070
Electronic ISSN: 1619-7089
DOI
https://doi.org/10.1007/s00259-021-05260-z

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