Abstract
Objectives
To review the gadoxetic acid disodium (EOB)-enhanced magnetic resonance (MR) imaging features of cholangiolocellular carcinoma (CoCC) of the liver and compare them with those of hepatocellular carcinoma (HCC) and intrahepatic cholangiocarcinoma (ICC).
Methods
EOB-enhanced MR images of 19 patients with CoCC, 23 with ICC, and 51 with HCC were retrospectively evaluated qualitatively and quantitatively. Univariate and multivariate analyses were performed to determine the characteristic MR features of CoCC with histopathological–imaging correlation.
Results
Multivariate logistic regression analysis showed that dot-/band-shaped internal enhancement during the arterial and portal phases (P < 0.001), and larger arterial ring enhancement ratio (CoCC, 0.13 ± 0.04; ICC, 0.074 ± 0.04; P = 0.013) were significantly independently associated with CoCC in contrast to ICC, whereas several MR features including progressive enhancement during the portal and late phases (P < 0.001), target appearance in the hepatocyte phase (P = 0.004), and vessel penetration (P = 0.013) were significantly more frequently associated with CoCC than HCC. The dot-/band-like internal enhancement (78.9% of CoCCs) histopathologically corresponded to the tumour cell nest with vascular proliferations and retained Glisson's sheath structure.
Conclusions
EOB-enhanced MR features of CoCC largely differ from those of HCC but are similar to those of ICC. However, the finding of thicker arterial ring enhancement with dot-/band-like internal enhancement could help differentiate CoCC from ICC.
Key Points
• Gadoxetic acid-enhanced MR features of cholangiolocellular carcinoma (CoCC) resembled those of intrahepatic cholangiocarcinoma (ICC).
• Gadoxetic acid-enhanced MR features of CoCC largely differed from those of hepatocellular carcinoma.
• Dot-/band-like internal enhancement of CoCC may be helpful for differentiating from ICC.
• Arterial ring enhancement of CoCC was larger than that of ICC.
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Abbreviations
- cHCC-CC:
-
Combined hepatocellular and cholangiocarcinoma
- CoCC:
-
Cholangiolocellular carcinoma
- DW:
-
Diffusion-weighted
- EOB:
-
Gadoxetic acid disodium
- HCC:
-
Hepatocellular carcinoma
- HE:
-
Hematoxylin and eosin
- ICC:
-
Intrahepatic cholangiocarcinoma
- LLC:
-
Lesion-to-liver contrast
- ROI:
-
Region of interest
- SI:
-
Signal intensity
- WHO:
-
World Health Organization
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Acknowledgements
We are grateful to Kazuhito Nakayasu (Kondo Photo Process Co., Ltd.) for providing professional statistical advice.
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The scientific guarantor of this publication is Tadatoshi Takayama
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The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.
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Statistics and biometry
Kazuhito Nakayasu (Kondo Photo Process Co., Ltd.) kindly provided statistical advice.
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Institutional Review Board approval was obtained.
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Written informed consent was waived by the Institutional Review Board.
Methodology
• Retrospective
• Case-control/observational study
• Multicenter study
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Haradome, H., Unno, T., Morisaka, H. et al. Gadoxetic acid disodium-enhanced MR imaging of cholangiolocellular carcinoma of the liver: imaging characteristics and histopathological correlations. Eur Radiol 27, 4461–4471 (2017). https://doi.org/10.1007/s00330-017-4811-2
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DOI: https://doi.org/10.1007/s00330-017-4811-2