The American College of Radiology contrast agent–enhanced US Liver Imaging Reporting and Data System effectively categorized liver nodules 20 mm or smaller in patients at risk for hepatocellular ca... Background American College of Radiology contrast agent–enhanced US Liver Imaging Reporting and Data System (CEUS LI-RADS) was developed to improve the accuracy of hepatocellular carcinoma (HCC) di...

The authors of this study determined that the use of the stiffness value for differentiation of malignant from benign focal liver lesions allowed more accurate diagnostic performance than the use of the stiffness ratio between the liver lesion and the background liver. PurposeTo investigate the use of stiffness value and stiffness ratio (ratio of lesion to background liver parenchyma values) to discriminate malignant from benign focal liver lesions by using histologic results as the reference standard.Materials and MethodsThis study was approved by the institutional review board, and written informed consent was obtained. Three hundred seventy-three patients with focal liver lesions proven at histologic examination underwent measurement of liver stiffness with elastography point quantification. First, stiffness values in two regions of the background liver parenchyma (at 0.5–2 cm and >2 cm from the lesion periphery) near 163 hepatocellular carcinomas were analyzed to determine a reference background liver for calculating the stiffness ratio. Second, the use of the lesion stiffness value and the stiffness ratio for prediction of liver malignancy was investigated in a cohort of patients with 58 benign and 201 malignant lesions. Results were validated in another independen...

Living donor liver transplantation (LDLT) has been widely used to treat end-stage liver disease with improvement in surgical technology and the application of new immunosuppressants. Vascular complications after liver transplantation remain a major threat to the survival of recipients. LDLT recipients are more likely to develop vascular complications because of their complex vascular reconstruction and the slender vessels. Early diagnosis and treatment are critical for the survival of graft and recipients. As a non-invasive, cost-effective and non-radioactive method with bedside availability, conventional gray-scale and Doppler ultrasonography play important roles in identifying vascular complications in the early postoperative period and during the follow-up. Recently, with the detailed vascular tracing and perfusion visualization, contrast-enhanced ultrasound (CEUS) has significantly improved the diagnosis of postoperative vascular complications. This review focuses on the role of conventional gray-scale ultrasound, Doppler ultrasound and CEUS for early diagnosis of vascular complications after adult LDLT.