Twisted cystic artery disclosed by 3-dimensional computed tomography angiography for torsion of the gallbladder.

Torsion of the gallbladder is a rare condition that most commonly affects elderly women. The symptoms of torsion mimic acute cholecystitis, but several clinical features and imaging findings can be useful for distinguishing it from typical acute cholecystitis. However, preoperative identification remains difficult. Three-dimensional angiography reconstructed by preoperative multidetector row computed tomography is useful for definitive diagnosis of torsion of the gallbladder. Demonstration of a twisted cystic artery by 3-dimensional computed tomography angiography represents specific and direct evidence of this condition, which allows immediate diagnosis and treatment.