title: Comparison of endoscopic and radiological residual fragment rate following percutaneous nephrolithotripsy.
abstract: The stone-free rate after extracorporeal shock wave lithotripsy (ESWL) is primarily determined by a plain abdominal radiograph alone. However, the accuracy of that assessment can be challenged by renal tomography and flexible nephroscopy. We report on 29 patients with large renal calculi treated with a combination of percutaneous nephrolithotripsy and ESWL. Stone-free rates were determined by plain abdominal radiograph, renal tomography and flexible nephroscopy. The plain abdominal radiograph and renal tomography overestimated stone-free rates by 35% and 17%, respectively, compared to flexible nephroscopy. To determine stone-free rates after ESWL renal tomography is superior to a plain abdominal radiograph alone. Also, among patients with large renal calculi the use of the flexible nephroscope markedly improves the stone-free rate.
authors.affiliation: Division of Urologic Surgery, Washington University School of Medicine, St. Louis, Missouri.
authors.forename: J D
authors.initials: JD
authors.lastname: Denstedt
authors.forename: R V
authors.initials: RV
authors.lastname: Clayman
authors.forename: D D
authors.initials: DD
authors.lastname: Picus
mesh_terms: D004724:Endoscopy; D005260:Female; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging; D007669:Kidney Calculi / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000628:therapy*; D008096:Lithotripsy; D008297:Male; D011860:Radiography, Abdominal; D014054:Tomography