[Calculosis of biliary and urinary tracts in children with congenital hemolytic anemias. (Retrospective view of some published work and certain investigations)].

During the last ten years twenty children with hereditary haemolitic anemia were admitted to the Children's University Hospital. As hyperbilirubinemia is one of the factors influencing calculi formation, we made systematic examination of the biliary and urinary pathways, because throughout these the excretory activity of bilirubin and its compound urobilinogen is performed. Owing to such a procedure, out of twenty children ten were discovered to have biliary calculi and other ten biliary and urinary calculi.