Two-Year Follow-up of Patients Treated with Extracorporeal Shock Wave Lithotripsy

Publisher Website
Google Scholar
Abstract
The 2-year follow-up of patients treated with extracorporeal shock wave lithotripsy (ESWL) is reported with regard to factors enhancing a successful stone-free result, new stone recurrences, and the fate of residual fragments. Analysis of 1910 patients evaluated 3 months following ESWL demonstrated that factors associated with an increased likelihood of a stone-free state were stone size 1 cm in diameter in the lower pole of the kidney were more likely to require multiple ESWL treatments, yet achieved lower stone-free rates than similar stones treated elsewhere in the renal collecting system. New stone formation and the growth of residual fragments were evaluated 1 and 2 years following ESWL. Overall, in patients becoming stone free, recurrent (new) stones occurred in 8.4% of cases between 3 months and 1 year following ESWL and in another 10.6% of patients between 1 and 2 years following treatment. However, kidneys with residual fragments were found to have fragment growth in 21.6% of cases between 3 months and 1 year following treatment (p < 0.001 compared with recurrent stone rate) and in 21.7% of cases between 1 and 2 years following treatment.