In this report the Authors present their experience regarding 11 patients (in all 12 renal units) with stones in horseshoe kidney treated by ESWL. Horseshoe kidney is a frequent malformation that in about one out of five cases is complicated by lithiasis with a marked tendency to recurrence. In these cases, because of anomalous seat, rotation and vascularization, percutaneous lithotripsy appears to be dangerous. 66.6% of treated renal units were stone-free after one or more treatments (maximum 3). The lithotriptor was a Dornier MFL 5000. On the basis of these data ESWL represents the treatment of choice for stones with dimensions less than 25 mm in horseshoe kidney.
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