Imaging features of malignant vs stone-induced biliary obstruction: Aspects to consider

Figure 2 69-years-old woman with biliary obstruction secondary to intrahepatic mass-forming type cholangiocarcinoma with tumoral involvement of the biliary ducts confluence. A: Axial late computed tomography arterial phase depicts a soft-tissue mass in left hepatic lobe, with delayed phase enhancement; B: Dilatation of intrahepatic ducts; C: Axial magnetic resonance images demonstrate a T2-weighted images slightly hyperintense; D: T1-weighted images hypointense heterogeneous mass occluding the confluence of the hepatic ducts with moderate dilatation of left lobar intrahepatic bile ducts, and tumoral involvement of the left intrahepatic biliary branches.