Intraductal papillary neoplasm of the biliary tract with typical clinicopathological, endoscopic features: A case report

Figure 1 Imaging findings. A and E: Arterial-phase computed tomography: A 41-mm left intrahepatic bile duct cystic tumour without enhancement 4 years ago (A) and a 63-mm left intrahepatic bile duct cystic tumour and papillary proliferation with slight hyperenhancement at this visit (E); B and F: Magnetic resonance imaging (MRI) on the T1-weighted image: A cystic tumour with low intensity 4 years ago (B) and the growing cystic tumour with low intensity at this visit (F); C and G: MRI on the T2-weighted image: A cystic tumour with high intensity 4 years ago (C) and the growing cystic tumour with high intensity at this visit (G); D and H: Magnetic resonance cholangiopancreatography: A cystic tumour and dilatation of the left hepatic duct and common bile duct 4 years ago (D) and the growing cystic tumour and more severe dilatation of the left hepatic duct and common bile duct at this visit (H).