Undifferentiated high-grade pleomorphic sarcoma of the common bile duct: A case report and review of literature

Figure 1 Imaging revealed calculous cholecystitis, intrahepatic and extrahepatic bile duct dilation with extrahepatic bile duct calculi, and a space-occupying lesion of the distal common bile duct. A: Computed tomography showed calculous cholecystitis, and a soft tissue density shadow at the distal common bile duct (CBD) with intrahepatic and extrahepatic bile duct dilatation; B-F: Magnetic resonance imaging by the (B) T1-weighted image, (C) T2-weighted image, (D) coronal plane sequence, (E) magnetic resonance cholangiopancreatography and (F) diffusion-weighted imaging revealed calculous cholecystitis, intrahepatic and extrahepatic bile duct dilation with extrahepatic bile duct calculi, and a soft tissue mass signal at the distal CBD with limited diffusion.