RESUMEN
ESWL has become the most widely advocated procedure for urinary calculi because of its minimal invasiveness and high effectiveness. Unfortunately, so far most urologist use push-up or push-down technique in the treatment of mid ureter stone with ESWL. Herein, we tried in situ ESWL with ultrasonographic targeting system (Lithostar ultra, Siemens Co., Germany) in 74 mid ureter stone patients. We could target the stone in 71 out of 74 patients (71/74, 95.6%) in semilateral position in the patients with upper half of mid ureter stone or in supine position in the patients with lower half of mid ureter stone The stone was successfully removed in sixty eight patients and the success rate was 9l.1% (68/ 74). The number of treatment session was 1 to 5 (mean 1.3+/-0.8) and the duration was 20-150 minutes (mean 46.4+/-19.7 minutes). Complications were gross hematuria in 5 cases(7.0%), severe colicky pain in 2 cases (2.8%). In conclusion, we think in situ ESWL with ultrasonographic targeting system is a recommendable treatment of modality in mid ureter stone patients.