Anisodamine accelerates spontaneous passage of single symptomatic bile duct stones ≤ 10 mm

Figure 1 Enrollment and outcomes.

Figure 2 A 60-year-old male with gallstones and a common bile duct stone of 7. 0 mm in diameter received anisodamine for 2 wk. The common bile duct (CBD) stone passed spontaneously within 2 wk after treatment. A: Magnetic resonance imaging (MRI) on cross-sectional T2-weighted imaging showing a filling defect in the CBD; B: Magnetic resonance cholangiopancreatography (MRCP) showing a 7-mm filling defect in the dilated CBD; C: Repeat MRI in the second week after conservative treatment illustrating that the CBD is clear of calculi; D: MRCP showing no signs of CBD stones.