Fig. 8
From: Complications of hepatic echinococcosis: multimodality imaging approach

A 72-year-old man with communicating rupture. Radiographic image performed during ERCP demonstrates a linear calcified opacity (arrowhead)—representing a hepatic hydatid cyst—and intrahepatic bile duct dilatation (white arrow). The catheter (black arrow) introduced in biliary tree enters directly into the cyst, documenting the cysto-biliary fistula