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    Placement of double-J stent in patients with malignant ureteral obstruction: antegrade or retrograde approach?
    (W B Saunders Co Ltd, 2019) Turgut, B.; Bayraktar, A. M.; Bakdik, S.; Hamarat, M. B.; Oncu, F.; Gonen, M.; Tolu, I
    AIM: To determine whether antegrade or retrograde methods should be preferred for double-J stent placement in patients with malignant ureteral obstruction (MUO). MATERIAL AND METHODS: The medical records of patients treated for MUO in the Urology and Interventional Radiology Clinic, Konya Training and Research Hospital, were reviewed retrospectively. Patients with benign aetiology were excluded from the study. Reports of the procedures, ultrasonography findings, computed tomography (CT), angiography, and pyelography images and the follow-up records of patients with MUO were assessed. A total of 111 patients and 114 ureteral stenting treatments were included in the study; 63 (55.3%) were operated on using the antegrade ureteral stenting (AUS) method, whereas 51 (44.7%) were operated on using the retrograde ureteral stenting (RUS), method, and the characteristics of these groups were evaluated. The presence of hydroureteronephrosis and ureteral tortuosity were determined. RESULTS: Overall success rates were found to be 95.2% using the AUS method and 47.1% using the RUS method. The technical success of the antegrade method was significantly higher in patients with or without tortuosity (respectively: p=0.005, Z shape p=0.001, pigtail shape p=0.03500). The technical success of the antegrade method was significantly higher in patients with hydroureteronephrosis (p=0.001). CONCLUSION: The AUS technique should be the first choice for double-J stent placement in patients with MUO. (C) 2019 The Royal College of Radiologists. Published by Elsevier Ltd. All rights reserved.