[New therapeutic alternative for complex renal lithiasis].

The combination of percutaneous nephrolitotomy and renal extracorporeal litothricy, is currently considered to be the best choice for the treatment of complex renal lithiasis. This procedure, however, quite frequently needs the use of adjuvant maneouvers (urethroscopy, catheterization, large number of sessions, etc.), and there is a considerable proportion of residual lithiasis. We present here our series using a new therapeutic sequence: first, we perform extracorporeal litothricy (ESWL) of calices not accessible to the nephroscope, followed by percutaneous nephrolitotomy which has revealed to be a simplification of the percutaneous surgical technique since it decreases the movements of the nephroscope and the use of ultrasounds. Calyceal lithiasis previously fragmented are then extracted through the nephrostomic channel and so no lithiatic paths are induced, the percentage of residual lithiasis being also lower.