* Operative time: Mean: 121.85 ± 30.47 (mins) * Biliary strictures: Mild - 1 patient (1.2%), moderate - 4 patients (4.8%), severe 11 patients (13.1%) * Stone removal results: Observed stone clearance by cholangioscopy: 69 patients (82.1%) Observed retained stones by cholangioscopy: 15 patients (17.9%) * Causes of retained stones observed by cholangioscopy: Biliary strictures: 15/15 (100%) patients * Time of stone removal: Mean: 52.50 ± 22.84 mins 3.2.2.