Follow-up results * Mean time to follow-up: 31.77 ± 11.23 (days) * Ultrasound results: Stone clearance: 58 patients (69%) Stone retained: 26 patients (31%) * Management after follow-up: Biliary drain removal during follow-up: 58 patients (69%) Admission for trans T-tube CBD exploration: 26 patients (31%) Trans T-tube CBD exploration one time: 22 patients = 26.2% Stone retained after treatment: 4 patients = 4.8% Stone clearance after treatment: 80 patients = 95.2% 3.2.4.