Abstract
Background
It remains unknown whether Kupffer-phase images in Sonazoid-enhanced ultrasonography (US) can be used to predict hypervascularization of borderline lesions. Therefore, we aimed to clarify whether Kupffer-phase images in Sonazoid-enhanced ultrasonography can predict subsequent hypervascularization in hypovascular borderline lesions detected on hepatobiliary-phase gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging.
Methods
From January 2008 to March 2012, 616 low-intensity hypovascular nodules were detected in hepatobiliary-phase images of Gd-EOB-DTPA-enhanced MRI at nine institutions. Among these, 167 nodules, which were confirmed as hypovascular by Gd-EOB-DTPA-enhanced MRI and Sonazoid-enhanced US, were evaluated in this study. Potential hypervascularization factors were selected based on their clinical significance and the results of previous reports. The Kaplan–Meier model and log-rank test were used for univariate analysis and the Cox regression model was used for multivariate analysis.
Results
The cumulative incidence of hypervascularization of borderline lesions was 18, 37, and 43 % at 1, 2, and 3 years, respectively. Univariate analyses showed that tumor size (p = 0.0012) and hypoperfusion on Kupffer-phase images in Sonazoid-enhanced US (p = 0.004) were associated with hypervascularization of the tumor. Multivariate analysis showed that tumor size [HR: 1.086, 95 % confidence interval = 1.027−1.148, p = 0.004] and hypo perfusion on Kupffer-phase images [HR: 3.684, 95 % confidence interval = 1.798−7.546, p = 0.0004] were significantly different.
Conclusions
Kupffer-phase images in Sonazoid-enhanced US and tumor diameter can predict hypervascularization of hypointense borderline lesions detected on hepatobiliary-phase Gd-EOB-DTPA-enhanced MRI.
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Abbreviations
- HCC:
-
Hepatocellular carcinoma
- US:
-
Ultrasonography
- CT:
-
Dynamic computed tomography
- MRI:
-
Magnetic resonance imaging
- DNs:
-
Dysplastic nodules
- Gd-EOB-DTPA:
-
Gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid
- T2WI:
-
T2-weigthed images
- CTHA:
-
CT during hepatic arteriography
- HRs:
-
Hazard ratios
- CIs:
-
Confidence intervals
- CTAP:
-
CT during arterial portography
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Inoue, T., Hyodo, T., Korenaga, K. et al. Kupffer phase image of Sonazoid-enhanced US is useful in predicting a hypervascularization of non-hypervascular hypointense hepatic lesions detected on Gd-EOB-DTPA-enhanced MRI: a multicenter retrospective study. J Gastroenterol 51, 144–152 (2016). https://doi.org/10.1007/s00535-015-1094-8
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DOI: https://doi.org/10.1007/s00535-015-1094-8