Efficacy of contrast-enhanced FDG PET/CT in patients awaiting liver transplantation with rising alpha-fetoprotein after bridge therapy of hepatocellular carcinoma
S. Hussein, Rasha; Rania RefaatMohammad; Abd Alkhalik Basha; Mohammed Sobhi Hassan; Ahmed A. El Sammak; Dena Abd El Aziz El Sammak; Mohamed Hesham Saleh Radwan; A. Saad El-DinEngi Elkholy; Nahla M. AwadSomaia; A. SalehIman; Dina R. D. Ibrahim; F. MontasserHany Said;
Abstract
© 2018, European Society of Radiology. Objective: To assess the diagnostic accuracy and illustrate positive findings of contrast-enhanced fluorine-18 fluoro-D-glucose positron emission tomography/computed tomography (18F-FDG PET/CT) image in patients awaiting liver transplantation (LT) with rising alpha-fetoprotein (AFP) after bridge therapy of hepatocellular carcinoma (HCC). Materials and methods: This prospective study included 100 patients who were waiting for LT and who previously underwent locoregional therapy (LRT) of HCC. These patients had rising AFP levels on a routine follow-up examination awaiting LT. All patients underwent a contrast-enhanced 18F-FDG PET/CT examination. We calculated for each patient the maximum standardised uptake value (SUVmax) of the tumour and the ratio of the tumoral SUVmax to the normal-liver SUVmax. The diagnostic accuracy and positive contrast-enhanced findings of 18F-FDG PET/CT were established by histopathology and clinical and imaging follow-up as the reference standards. Results: Contrast-enhanced 18F-FDG PET/CT detected tumour relapse in 78 patients (13 patients had intrahepatic lesions, 10 patients had extrahepatic metastases and 55 patients with combined lesions). The sensitivity, specificity and accuracy values of contrast-enhanced 18F-FDG PET/CT examination in the detection of HCC recurrence were 92.8%, 94.1% and 93%, respectively. A significant correlation was found between the AFP level and SUVmax ratio (r = 0.2283; p = 0.0224). The best threshold for 18F-FDG PET positivity was >1.21. Conclusion: Contrast-enhanced 18F-FDG PET/CT is a valuable tool for the detection of intrahepatic HCC recurrence or extrahepatic metastasis following rising AFP levels after LRT of HCC, and should be incorporated during routine workup awaiting LT. Key Points: •18F-FDG PET/CT is a valuable tool for the detection of HCC recurrence •18F-FDG PET/CT should be incorporated during routine workup awaiting liver transplantation •Significant correlation was found between AFP level and SUVmax ratio •The best threshold for18F-FDG PET positivity was >1.21 • The ideal cut-off value for AFP was >202.
Other data
Title | Efficacy of contrast-enhanced FDG PET/CT in patients awaiting liver transplantation with rising alpha-fetoprotein after bridge therapy of hepatocellular carcinoma | Authors | S. Hussein, Rasha ; Rania RefaatMohammad; Abd Alkhalik Basha; Mohammed Sobhi Hassan; Ahmed A. El Sammak; Dena Abd El Aziz El Sammak; Mohamed Hesham Saleh Radwan; A. Saad El-DinEngi Elkholy; Nahla M. AwadSomaia; A. SalehIman; Dina R. D. Ibrahim; F. MontasserHany Said | Keywords | Fluorodeoxyglucose F18 Positron-emission tomography Hepatocellular carcinoma Alpha-fetoprotein Liver transplantation | Issue Date | 12-Jun-2018 | Publisher | Springer | Source | Refaat, R., Basha, M.A.A., Hassan, M.S. et al. Eur Radiol (2018) 28: 5356. https://doi.org/10.1007/s00330-018-5425-z | Journal | European Radiology | DOI | 5356 1432-1084 12 5367 https://api.elsevier.com/content/abstract/scopus_id/85048364852 28 10.1007/s00330-018-5425-z |
PubMed ID | 28 | Scopus ID | 2-s2.0-85048364852 |
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