Double pouched, sigmoid gallbladder that can cause a diagnostic dilemma to radiologists: a case report.

Gallbladder shows frequent variations in position, shape, interior, and its duct system. These variations may go unnoticed lifelong; however, they may predispose it for cholecystitis and cholelithiasis. We observed a double pouched gallbladder in an adult male cadaver. The gallbladder was folded to have a sigmoid shape. It had two broad pouches: anterior and posterior and a narrow isthmus in between. Its anterior pouch was covered by peritoneum, whereas the posterior pouch was covered by extrahepatic connective tissue. We discuss the clinical and radiological importance of the case.