Digital single-operator video cholangioscopy improves endoscopic management in patients with primary sclerosing cholangitis-a retrospective observational study

Figure 2 Selective guidewire placement across a biliary stricture in a patient with primary sclerosing cholangitis using digital single-operator video cholangioscopy. A: Multiple attempts to pass a biliary stricture in a patient with primary sclerosing cholangitis using conventional selective guidewire insertion failed, which is why digital single-operator video cholangioscopy (SOVC) was used and helped visualize the stricture; B and C: Under SOVC-assisted guidance, a guidewire was successfully placed across the biliary stricture, enabling subsequent endoscopic therapy.