Abstract
Background and Aims
18F-fluorocholine positron emission tomography/computed tomography (18F-FCH PET/CT) is an emerging functional imaging technique in the diagnosis and management of hepatocellular carcinoma (HCC). The aim of this study was to assess the ability of a pre- and post-treatment 18F-FCH PET/CT to predict prognosis and treatment response in early-stage HCC.
Methods
Patients with early- or intermediate-stage HCC planned for locoregional therapy were prospectively enrolled. Baseline demographic and tumor information was collected and baseline and post-treatment 18F-FCH PET/CT performed. Maximum standardized uptake values (SUVmax) were determined for each HCC lesion, and the difference between baseline and post-treatment SUVmax values were compared with progression-free survival outcomes.
Results
A total of 29 patients with 39 confirmed HCC lesions were enrolled from a single clinical center. Patients were mostly men (89.7%) with hepatitis C or alcohol-related cirrhosis (65.5%) and early-stage disease (89.7%). Per-patient and per-lesion sensitivity of 18F-FCH PET/CT was 72.4% and 59.0%, respectively. A baseline SUVmax < 13 was associated with a superior median progression-free survival compared with an SUVmax of > 13 (17.7 vs. 5.1 months; p = 0.006). A > 45% decrease in SUVmax between baseline and post-treatment 18F-FCH PET/CT (“responders”) was associated with a superior mean progression-free survival than a percentage decrease of < 45% (“non-responders,” 36.1 vs. 11.6 months; p = 0.034).
Conclusions
Baseline and post-treatment 18F-FCH PET/CT predicts outcomes in early-stage HCC undergoing locoregional therapy. This technique may identify patients with an objective response post-locoregional therapy who would benefit from further therapy.
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Abbreviations
- 18F-FCH PET/CT:
-
18F-fluorocholine positron emission tomography/computed tomography
- HCC:
-
Hepatocellular carcinoma
- SUVmax:
-
Maximum standardized uptake values
- EASL:
-
European Association for the Study of the Liver
- AFP:
-
Alpha fetoprotein
- mRECIST:
-
Modified Response Evaluation Criteria in Solid Tumors
- SIRT:
-
Selective internal radiotherapy
- 18F-FDG:
-
18F-fluorodeoxyglucose
- AASLD:
-
American Association for the Study of Liver Diseases
- BCLC:
-
Barcelona Clinic Liver Cancer
- TACE:
-
Transarterial chemoembolization
- SBRT:
-
Stereotactic body radiotherapy
- MRI:
-
Magnetic resonance imaging
- CT:
-
Computed tomography
- VOI:
-
Volume of interest
- 95% CI:
-
95% confidence interval
- NAFLD:
-
Nonalcoholic liver disease
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Acknowledgments
The authors would like to thank Elaine Campbell for her help with study management and data collection.
Funding
This study was funded in part by the Cancer and Palliative Care Research and Evaluation Unit Small Grants Scheme of the University of Western Australia and a research grant from the Australian and New Zealand Society of Nuclear Medicine. The sponsors had no role in the conduct of the research; study design; collection, analysis and interpretation of data; writing of the manuscript; or decision to submit the article for publication.
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Wallace, M.C., Sek, K., Francis, R.J. et al. Baseline and Post-treatment 18F-Fluorocholine PET/CT Predicts Outcomes in Hepatocellular Carcinoma Following Locoregional Therapy. Dig Dis Sci 65, 647–657 (2020). https://doi.org/10.1007/s10620-019-05781-6
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DOI: https://doi.org/10.1007/s10620-019-05781-6