Abstract
Piezoelectric lithotripters have the smallest focal zone of all lithotripters. This small diameter-high pressure zone on the stone with continuous monitoring by ultrasonography throughout treatment minimizes the volume of the kidney exposed to potentially harmful pressure and avoids radiation hazards. We performed piezoelectric lithotripsy on 79 renal units of children 16 months to 14 years old. One child needed ureterorenoscopy for removal of Steinstrasse. In the other case with a ureteropelvic stone, residual stone (stone bed) without hindrance of passage remained on radiography after three sessions. There were no significant complications, only transient microscopic hematuria and mild fever lasting less than 24 hours in some children. After 2 months, 77 patients (97%) were free of stones. No evidence of surrounding soft-tissue damage was observed.
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