Introduction: The aim of the study was to observe the
success rate of extracorporeal shock wave lithotripsy (ESWL)
in the management of upper urinary tract stones.
Materials and Methods: This retroprospective study was
conducted in Pokhara Kidney stone Centre, Pokhara, Kaski,
Nepal from January 2017 to January 2018. Seventy nine
patients were selected in this study with upper urinary tract
stone, size less than 20mm.
Results: Seve nty four (93.67%) patients were successfully
treated in initial use of shock wave and 5 (6.32%) patients
required repetition.
Conclusion: Overall satisfactory success rate was observed
using ESWL for the upper urinary tract stone. Careful selection
of patient, stone size and Hounsfield unit (HU) is advisable.

Keywords: ESWL, upper urinary tract stone, Stone size, Hounsfield Unit