The study is performed to provide a better understanding of the influence of biofilms on ureteral stents on the entire spectrum of stent-associated morbidity in a longterm setting.~In addition, the trial is intended to give an overview of the incidence of complaints, the occurrence of complications and their economic aspects.~The influence of biofilms on the morbidity associated with longterm ureteral stenting is assessed.
This study is performed to analyze various aspects of biofilms on ureteral stents in a longterm setting.