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![Cholangiocarcinoma: early detection and screening in high-risk population](https://image.oaes.cc/18f542db-8399-4670-a20a-2d89119b01ab/5072.fig.2.jpg)
Figure 2. A 58 year-old man with long lasting primary sclerosing cholangitis and ulcerative cholangitis. A stenosis in the hepatic duct associated with focal bile duct thickening with enhancement at MRI was detected. A diagnostic ERCP was performed, confirming the presence of a noncritical stenosis of 2.5 mm in diameter and 5 mm in length in the hepatic duct, just below the hepatic confluent. Brush cytology and biopsy were obtained for anatomopathological analysis, and no atypia were found.