[Congenital duplication of the gallbladder. A rare case of a trabecular gallbladder]

Duplication of the gallbladder is a congenital anomaly of rare preoperative diagnostic finding, which could be present in an asymptomatic or symptomatic form. The authors report a case of double gallbladder, which becomes clinically manifest through repeated biliary colics. The preoperative diagnostic procedures did not reveal the malformation, but only the presence of lithiasis in one of the gallbladders, in the common bile duct and, for an anomalous insertion of the cystic duct, a suspect cancer of the distal choledochus.