Wilhelm, Konrad and Hahn, Oliver and Schoenthaler, Martin and Hein, Simon and Neubauer, Jakob and Schnabel, Marco and Neisius, Andreas (2019) Stone-Free Rate after Treating Kidney Stones Exceeding 10 mm via Flexible Ureteroscopy: Can Endoscopic Assessment Replace Low-Dose Computed Tomography Control? UROLOGIA INTERNATIONALIS, 103 (3). pp. 326-330. ISSN 0042-1138, 1423-0399
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Introduction: It is unclear whether endoscopic assessment of the stone-free rate after flexible ureteroscopy (fURS) is as effective as assessment with low-dose computed tomography (CT) scan. Methods: Prospective documentation of patients with kidney stones > 10 mm diameter from 2 different centers (Freiburg, Regensburg), who underwent fURS and were declared to be endoscopically completely stone-free. Low-dose CT control performed 4-8 weeks postoperatively. Results/Conclusion: Thirty-eight patients were treated between October 2015 and August 2016 (12 F, 26 M). Average age was 55.9 years (range 19-82, SD 17.24), and body mass index was 29.7 kg/m(2) (range 23.5-42.5, SD 4.37). There were 2.0 (range 1-7, SD 1.55) stones with a mean diameter of 15 mm (range 10-40, SD 6.78) per kidney. Mean surgery time was 74 min (range 38-124, SD 24.28), and lithotripsy was necessary in 33 cases. CT was performed 5.4 weeks afterwards (range 4-8, SD 1.43). One patient had a 2 mm residual which was extracted by URS. Strictly speaking, endoluminal stone removal control failed in only that patient, yielding a negative predictive value of 97%. A routine postoperative CT scan would thus appear unnecessary in the case of negative endoscopic control for residual fragments and should be avoided to reduce radiation exposure. Further investigations with larger patient populations are necessary.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | INSIGNIFICANT RESIDUAL FRAGMENTS; CLINICAL-SIGNIFICANCE; TERM; CT; NEPHROLITHOTOMY; Urolithiasis; Stone-free rate; Low-dose computed tomography; Ureteroscopy; Flexible ureteroscopy; Parenchymal calcification; Lithotripsy |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Urologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 26 Mar 2020 06:42 |
| Last Modified: | 26 Mar 2020 06:42 |
| URI: | https://pred.uni-regensburg.de/id/eprint/26091 |
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