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

Figure 1 Digital single-operator video cholangioscopy-assisted biliary stricture evaluation in a patient with primary sclerosing cholangitis. A: Using digital single-operator video cholangioscopy (SOVC) enabled the direct visualization of a biliary stricture showing typical signs of chronic inflammation in a patient with primary sclerosing cholangitis; B and C: To rule out malignancy, multiple SOVC-guided forceps biopsies of the biliary stricture were obtained.

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.