[Double gallbladder - a rare congenital variation].

Double gallbladder, a congenital anatomic variation, represents approximately 2% of all congenital anatomic variations of the gastrointestinal tract, its incidence amounting to about 25 in 100 000. It has several types classified according to Boyden's criteria. The diagnostic method of first choice is ultrasonography. When the patient has no health complaints and cholecystolithiasis is present, no special treatment measures are required. The treatment option in symptomatic cholecystolithiasis is laparoscopic cholecystectomy. Only a few cases of double or triple gallbladder, in contrast to the high number of cholecystectomies, have been published in literature. The authors present a case of double gallbladder where the diagnosis was established more than three years after laparoscopic cholecystectomy