Pre-operative imaging can diagnose torsion of the gallbladder: report of a case.

Torsion of the gallbladder is a rare disease and pre-operative diagnosis of the disease is uncommon. About 400 cases have been reported, but only 4 were diagnosed by pre-operative imaging. We report on a case of gallbladder volvulus diagnosed pre-operatively using pre-operative imaging with ultrasound and computed tomography.