[Practical experiences with antegrade local chemolysis of struvite/apatite, uric acid and cystine calculi in the kidney]. 
In 18 patients (20 kidneys) with struvite/apatite-, uric acid- and cystine stones antegrade local chemolysis was performed via percutaneous or operative nephrostomy.  Complete stone dissolution was achieved in 11 kidneys, while in six kidneys partial dissolution of stones was performed.  In these six cases added instrumental manipulations shortened the time of therapy.  In three cases chemolysis was unsuccessful.  Average irrigation time was 21 days per renal unit.  Only minor complications like dysuria and skin rashes were seen.  Due to long time of irrigation we recommend chemolitholysis mainly as an additional form of therapy in case of residual stones after operative or percutaneous nephrolithotomy.