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ORIGINAL ARTICLE
Year : 2021  |  Volume : 13  |  Issue : 2  |  Page : 105-110

The impact of the pelvicalyceal anatomy characteristics on the prediction of flexible ureteroscopy outcomes


1 Urology Clinic, Sisli Hamidiye Etfal Research and Training Hospital, University of Health Sciences, Istanbul, Turkey
2 Urology, Pediatric Urology and Uro-Oncology Clinic, KMG Klinikum Luckenwalde, Brandenburg, Germany
3 Urology Clinic, Kafkas University Medical School, Kars, Turkey

Correspondence Address:
Dr. Musab Ilgi
Urology, Pediatric Urology and Uro-Oncology Clinic, KMG Klinikum Luckenwalde, Brandenburg
Germany
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DOI: 10.4103/UA.UA_19_20

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Background: The anatomical architecture is a prominent factor in the outcomes of flexible ureteroscopy (FURS). Aims and Objectives: The aim to regard the success of procedures based on Pelvicalyceal body that called Sampaio classification system. Materials and Methods: A total of 125 FURS procedures were reviewed between December 2012 and December 2016 in our department. Seven patients were excluded from the study due to the horseshoe kidney in two cases and recurrent cystine stone configuration in five patients. The patient's renal collecting system anatomy characteristics are regarded, and they are classified into four main groups based on the mid-renal-zone anatomy assessed according to Sampaio Classification. Results: Total stone-free rate (SFR) during the postoperative 1st-month evaluation was noncontrast computerized tomography 75 (63.6%). The evaluation of the SFR in all subgroup of cases based on Sampaio classification noticed easily, SFR was significantly lower in subgroup A2 (30.4%) (P = 0.00), significantly higher in subgroup B2 (P = 0.008). The comparative analysis of the operative duration defined that it was the shortest (75.3 ± 18.1 min) in Type B1 subgroup cases, and the longest (84.7 ± 25.7 min) in the Type A2 subgroup cases. Even though this duration was found to be relatively higher in Type A2 subgroup cases than the others, this difference was not statistically significant (P = 0.271). Fluoroscopy time was noted to be the shortest (11.9 ± 13.4 s) in B1 subgroup and the longest in A2 subgroup with a statistically significant different (median: 21.3 ± 30.4) (P = 0.04). While 6 (5.1%) cases had Clavien 2 and 3 (2.5%) cases, demonstrated Clavien 3a complications. Conclusion: The calyceal structure of the kidney affects the SFR; therefore, a detailed classification of pelvicalyceal could improve the outcomes, decrease the rate of auxiliary procedures and prevent the complications.


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