'H-type' duplex gallbladder resected laparoscopically with transcystic choledochoscopy and stone retrieval.

A duplex gallbladder is an extremely rare congenital anomaly that while may remain asymptomatic, may also develop into biliary colic, cholecystitis, cholangitis or pancreatitis. In these circumstances, it is advisable to surgically remove both gallbladders. Typically, a cholecystectomy is performed laparoscopically as this aids patient recovery and complication risk; however, when congenital abnormalities are present, some may choose to revert to an open operation.