Fig. 5
From: MRI features predict microvascular invasion in intrahepatic cholangiocarcinoma
ICC (white thick arrow) without MVI in a 66-year-old man (tumor grade, G2; CA19–9, < 37 U/ml (20.6 U/ml)). Intrahepatic duct dilatation and visible hepatic artery penetration did not appear in all images of this lesion. a Axial T2-weighted image showing the signal of the tumor was unevenly high intensity and the retraction of the hepatic capsule adjacent to the tumor (black arrow). The tumor morphology was spherical. b Axial T1-weighted-FS image showing that the tumor was located in segment IV of the liver. c Axial DW image (b = 500 s/mm2) showing a uniform high signal. d-g Images during the arterial to delayed phase showing that the tumor showed continuous overall enhancement (high signal). The maximum diameter of the tumor was 1.89 cm and the maximum enhancement edge thickness was 1.89 cm, and the arterial edge enhancement ratio was 100% (1.89/1.89)