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| Variables | N. (%) |
| Normal | 5 (18.5) |
| CBD stone/Sludge | 2 (7.4) |
| Passed CBD stone | 5 (18.5) |
| Opium induced CBD dilation | 6 (22.2) |
| Post cholecystectomy state | 8 (29.6) |
| GB stone | 1 (3.7) |
CBD: common bile duct; GB: gallbladder; N: number.
