Concretions is gall bladder and biliary pathways and their complications are the most frequent diseases of biliary pathways in adult patients. They affect 10 - 20% proportion of the population in countries entertaining high standard of living. They belong to frequent causes of hospitalization. The occurrence at the child age is rather rare, but is encountered more frequently in adolescents. They occur, however, in all period of life. The authors review literature dealing with these problems and include case reports of patients with different clinical manifestations of cholelithiasis in children of different age, who were examined and treated at the Clinic for Children and Adolescents and theWard of Surgery at the Faculty Hospital in Královské Vinohrady, Prague.

        Key words: cholelithiasis, children, ultrasonography, laparoscopic cholecystectomy