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Iso- or hyperintensity of hepatocellular adenomas on hepatobiliary phase does not always correspond to hepatospecific contrast-agent uptake: importance for tumor subtyping

  • Edouard Reizine
  • Maxime RonotEmail author
  • Frederic Pigneur
  • Yvonne Purcell
  • Sebastien Mulé
  • Marco Dioguardi Burgio
  • Julien Calderaro
  • Giuliana Amaddeo
  • Alexis Laurent
  • Valérie Vilgrain
  • Alain Luciani
Gastrointestinal
  • 45 Downloads

Abstract

Purpose

This study was conducted in order to evaluate if iso- or hyperintensity of HCAs on HBP is systematically related to a high uptake of hepatospecific contrast agent, using a quantitative approach.

Methods

This bicentric retrospective study included all patients with histologically confirmed and subtyped HCA from 2009 to 2017 who underwent MRI with HBP after Gd-BOPTA injection and who showed iso- or hyperintensity on HBP. The signal intensity of tumors on pre- and postcontrast images and the presence of hepatic steatosis were noted. Contrast uptake on HBP was quantified using the liver-to-lesion contrast enhancement ratio (LLCER) and compared between HCA subtypes (Wilcoxon signed-rank test). Categorical variables were compared using chi-square tests.

Results

Twenty-four HCAs showed iso- or hyperintensity on HBP, specifically 17 inflammatory (IHCAs) and 7 β-catenin HCAs (BHCAs). Eighteen HCAs (75%) (17 IHCAs and 1 BHCAs) had a LLCER < 0% (median − 13.6%, group 1), of which 94% were hyperintense on precontrast T1-W images, with background hepatic steatosis. Six HCAs (25%) had LLCER ≥ 0% (median 2.9%, group 2), and all were BHCAs. A LLCER ≥ 1.6% was associated with the diagnosis of BHCA with a sensitivity of 86% and a specificity of 100%.

Conclusion

In conclusion, iso- or hyperintensity of hepatocellular adenomas on HBP does not necessarily correspond to an increased hepatospecific contrast-agent uptake. In IHCA, tumor hyperintensity on precontrast images and the underlying steatosis likely explain such iso- or hyperintensity, which do show reduced HBP contrast-agent uptake. On the other hand, marked contrast uptake can be observed, especially in BHCA.

Key Points

• Iso- or hyperintensity on HBP does not necessarily reflect a high uptake of hepatospecific contrast agent.

• Discrepancies between qualitative signal intensity and quantitative hepatospecific contrast uptake can be explained in IHCA by a combination of tumor hyperintensity on precontrast images and underlying hepatic steatosis.

• In BHCA, iso- or hyperintensity on HBP does actually correspond to a greater contrast uptake than that of the liver, demonstrated by an increased lesion-to-liver contrast enhancement ratio (LLCER).

Keywords

Adenoma Liver neoplasms Contrast media Magnetic resonance imaging 

Abbreviations

BHCA

β-Catenin-mutated hepatocellular adenoma

FNH

Focal nodular hyperplasia

HBP

Hepatobiliary phase

HCA

Hepatocellular adenoma

HHCA

HNF1-α-inactivated HCA

IHCA

Inflammatory HCA

LLCER

Liver-to-lesion contrast enhancement ratio

OATP

Organic anion transporting polypeptide

SI

Signal intensity

SIR

Signal intensity ratio

Notes

Funding

The authors state that this work has not received any funding.

Compliance with ethical standards

Guarantor

The scientific guarantor of this publication is Maxime Ronot.

Conflict of interest

The authors declare that they have no conflict of interest.

Statistics and biometry

No complex statistical methods were necessary for this paper.

Informed consent

Written informed consent was waived by the Institutional Review Board.

Ethical approval

Institutional Review Board approval was obtained.

Study subjects or cohorts overlap

Some study subjects or cohorts have been previously reported in a previous manuscript in the European Radiology focusing on a correlation between the quantitative analysis of benign hepatocellular tumor uptake on HBP imaging and the quantitative level of OATP expression [28].

Methodology

• retrospective

• diagnostic or prognostic study

• multicenter study

Supplementary material

330_2019_6150_MOESM1_ESM.docx (1.2 mb)
ESM 1 (DOCX 1258 kb)

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Copyright information

© European Society of Radiology 2019

Authors and Affiliations

  • Edouard Reizine
    • 1
    • 2
  • Maxime Ronot
    • 2
    • 3
    • 4
    Email author
  • Frederic Pigneur
    • 1
  • Yvonne Purcell
    • 2
  • Sebastien Mulé
    • 1
  • Marco Dioguardi Burgio
    • 2
  • Julien Calderaro
    • 5
    • 6
    • 7
  • Giuliana Amaddeo
    • 6
    • 7
    • 8
  • Alexis Laurent
    • 6
    • 9
  • Valérie Vilgrain
    • 2
    • 3
    • 4
  • Alain Luciani
    • 1
    • 6
    • 7
  1. 1.Department of RadiologyAPHP, HU Henri MondorCreteilFrance
  2. 2.Department of RadiologyAPHP, University Hospitals Paris Nord Val de SeineClichyFrance
  3. 3.University Paris DiderotParisFrance
  4. 4.INSERM U1149, centre de recherche biomédicale Bichat-Beaujon, CRB3ParisFrance
  5. 5.Department of PathologyAPHP, HU Henri MondorCreteilFrance
  6. 6.Faculté de MédecineUniversite Paris Est CreteilCreteilFrance
  7. 7.INSERM Unit U 955CreteilFrance
  8. 8.Department of HepatologyAPHP, HU Henri MondorCreteilFrance
  9. 9.Department of Liver SurgeryAPHP, HU Henri MondorCreteilFrance

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