Abstract
Objectives
To determine the methodology of non-invasive test for evaluation of liver stiffness (LS) with tumours using two-dimensional (2D) shear wave elastography (SWE).
Methods
One hundred and twenty-seven patients with liver tumours underwent 2D-SWE before surgery to measure liver and spleen stiffness (SS). Two-dimensional SWE values were obtained in the liver at 0–1 cm, 1–2 cm and >2 cm from the tumour edge (PLS-1, PLS-2 and RLS, respectively). The influence of tumour-associated factors was evaluated. The area under the receiver operating characteristic curve (AUC) for each value was analysed to diagnose cirrhosis.
Results
PLS-1 was higher than PLS-2, which was even higher than RLS (p < 0.001). The AUCs of PLS-1, PLS-2, RLS and SS for diagnosing cirrhosis were 0.760, 0.833, 0.940 and 0.676, with the specificity of 75.7%, 67.6%, 90.3% and 77.4%, respectively. Tumour sizes, locations or types showed no apparent influence on 2D-SWE values except for RLS, which was higher in patients with primary hepatic carcinomas (p < 0.05).
Conclusions
LS with tumours is best measured at >2 cm away from the tumour edge. SS measurement could be used as an alternative to LS measurement in the event of no available liver for detection.
Key Points
• Tumour-associated factors impact background liver stiffness assessment.
• Background liver stiffness is best measured at >2 cm from tumour edge.
• Spleen stiffness can be an alternative to assess background liver stiffness.
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Abbreviations
- 2D-SWE:
-
Two-dimensional shear wave elastography
- ALB:
-
Albumin
- ALP:
-
Alkaline phosphatase
- ALT:
-
Glutamate pyruvate transaminase
- AST:
-
Glutamic oxaloacetic transaminase
- CCC:
-
Cholangiocellular carcinoma
- CV:
-
Coefficient of variation
- DBIL:
-
Direct bilirubin
- EFSUMB:
-
European Federation of Societies for Ultrasound in Medicine and Biology
- GGT:
-
Glutamyl transpeptidase
- HBV:
-
Hepatitis B virus
- HCC:
-
Hepatocellular carcinoma
- LS:
-
Liver stiffness
- MHC:
-
Metastatic hepatic carcinoma
- PHLF:
-
Post-hepatectomy liver failure
- PLS :
-
Peritumoural liver stiffness,
- PLS-1 :
-
Peritumoural liver stiffness measured at 0–1 cm from the tumour edge
- PLS-2:
-
Peritumoural liver stiffness measured at 1–2 cm from the tumour edge
- PT:
-
Prothrombin time
- RLS:
-
Remnant liver stiffness
- SS:
-
Spleen stiffness
- SSI:
-
Supersonic shear imaging
- TBIL:
-
Total bilirubin
- TE:
-
Transient elastography
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The scientific guarantor of this publication is An-hua Li.
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No complex statistical methods were necessary for this paper.
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Written informed consent was obtained from all subjects (patients) in this study.
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Institutional review board approval was obtained.
Methodology
• prospective
• diagnostic or prognostic study
• performed at one institution
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Zheng, W., Zhou, Zg., Wong, Ch. et al. Evaluation of liver parenchyma stiffness in patients with liver tumours: optimal strategy for shear wave elastography. Eur Radiol 29, 1479–1488 (2019). https://doi.org/10.1007/s00330-018-5676-8
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DOI: https://doi.org/10.1007/s00330-018-5676-8