[Oral chemolysis of uric acid stones].

Oral chemolysis of uric acid stones was performed retrospectively. Twenty-one patients with upper urinary uric acid stones were given alkaline citrate (Uralyt-U) orally. In the case of hyperuicemia, allopirinol was combined. In 11 out of 15 patients (73.3%) treated with oral chemolysis alone, stones were dissolved. In 4 out of 6 cases (66.7%) combined with extracorporeal shock-wave lithotripsy, administration of alkaline citrate shortened the period to be stone-free. In conclusion, we successfully treated 15 out of 21 cases (71.4%) with the administration of alkaline citrate.