Key points are not available for this paper at this time.
Between January and December 1989, 123 patients with distal ureteral stones were treated with in situ extracorporeal shockwave lithotripsy (ESWL) using a modified HM3 Dornier lithotriptor. One hundred and three patients (83.7%) were stone-free, 20 patients (16.3%) had small residual stones ( or = 75 mm2), radiopacity and grade of dilatation have a direct correlation to the difficulty to disintegrate ureteral stones.
Mattelaer et al. (Wed,) studied this question.