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

Table 5 Diagnosis and treatment of biliary stone disease and performance of selective guidewire placements across biliary strictures (with a previous failure of conventional endoscopic methods to pass a guidewire) using digital single-operator video cholangioscopy in patients with primary sclerosing cholangitis

Variable	Examinations (n = 46)
Cholangiolithiasis, n (%)	8/46 (17.3)
Localization
Extrahepatic, n (%)	3/8 (37.5)
Intrahepatic, n (%)	3/8 (37.5)
Intra- and extrahepatic, n (%)	2/8 (25)
Stone size (range)	3-20 mm
Stone number (range)	1-5
Treatment
Complete success (conventional ± EHL), n (%)	8/8 (100)
Success only via use of EHL, n (%)	2/8 (25)
Stone identification only via SOVC, n (%)	3/8 (37.5)
Selective guidewire insertion across biliary strictures, n (%)	6/46 (13)
Kind of procedures
Initial examinations, n (%)	5/6 (83.3)
Repeated examinations, n (%)	1/6 (16.7)
Technical success, n (%)	6/6 (100)

EHL: Electrohydraulic lithotripsy; SOVC: Single-operator video cholangioscopy.