Contrast-enhanced ultrasound in portal venous system aneurysms: A multi-center study

Figure 1 Patient 1: Portal venous system aneurysm in a 56-year-old woman with a history of overweight and dyslipidemia, who was referred because of suspected nonalcoholic fatty liver disease. A: Right oblique sagittal view shows a focal fusiform dilatation of the extrahepatic segment of the main portal vein (arrow), with a maximum diameter of 30 mm (caliper 1); B: Right oblique sagittal view with color Doppler shows “to-and-fro” flow signal inside the lesion (arrow); C: Right oblique sagittal view shows the contrast-enhanced ultrasound characteristics of the portal venous system aneurysm which is not enhanced in the arterial phase (17 s, arrowheads); D: Homogenously enhanced throughout the early portal venous phase (22 s, arrowheads); E: Persistently enhanced with slow washout in the late phase (301 s, arrowheads).