title: Endoscopic retroperitoneal removal of stones from the upper half of the ureter.
mesh_terms: D000293:Adolescent; D000368:Aged; D019723:Endoscopes; D004724:Endoscopy / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D014514:Ureteral Calculi / Q000601:surgery*