Asymptomatic portal vein aneurysm: Three case reports

Figure 1 Abdominal ultrasonographic imaging of Case 1. A: Anechoic lesion corresponding to a notably dilated extrahepatic portal vein (arrow); B: Colour Doppler showed the “Korean flag” pathological sign in the dilated portal vein; C: Doppler recording showed flat venous flow.

Figure 2 Abdominal ultrasonographic imaging of Case 2. A: Extrahepatic anechoic saccular lesion, indicating an aneurysmal dilation of the extrahepatic portal vein (arrow); B: The anechoic lesion was 42.3 mm at its maximal diameter; C: Colour Doppler showed hepatopetal venous flow in the extrahepatic aneurysmal dilated vessel; D: Doppler recording showed pulsating flow of venous type.

Figure 3 Abdominal computed tomographic scanning of Case 2. The axial image showed saccular extrahepatic aneurysmal dilatation of the portal vein (arrow).

Figure 4 Contrast-enhanced magnetic resonance imaging of the abdomen of Case 2. The axial image showed saccular extrahepatic aneurysmal dilatation of the portal vein (arrow).

Figure 5 Abdominal ultrasonographic imaging of Case 3. A: Anechoic lesion of the right branch of the portal vein (arrow); B: The intrahepatic anechoic lesion was 27 mm at its maximal diameter; C: Colour Doppler showed the “Korean flag” pathological sign.