Cholecystocele. A congenital anomaly of the gallbladder.

Complete excision of a cholecystocele is recommended unless the remaining biliary drainage of the liver would be jeopardized. Evidence suggests that the embryologic development of the gallbladder and cystic duct is probably a sequestration and differentiation process from the hepatic antrum and not an independent "budding" from the primitive hepatic diverticulum.