Torsion of the gallbladder: two case reports.

Torsion of the gallbladder is a rare disease. It is simply defined as a rotation of the gallbladder on its mesentery along the axis of the cystic duct and cystic artery. The aetiology is unknown. However, several factors are postulated as playing causative roles. The disease symptoms mimic acute cholecystisis. The current value of radiological imaging is limited, but clinically, volvulus of the gallbladder is an acute surgical situation. It may be treated and diagnosed by a laparoscopic approach.