Fig. 1

Abdominal computed tomography at admission (a) Multiple calculi in the gallbladder and an incarcerated calculus in the cystic duct (triangle) (b) An incarcerated calculus in the cystic duct (triangle)
Abdominal computed tomography at admission (a) Multiple calculi in the gallbladder and an incarcerated calculus in the cystic duct (triangle) (b) An incarcerated calculus in the cystic duct (triangle)