Retrospective analysis to evaluate Allium stents as an alternative method for the treatment of ureteral strictures

Introduction: Allium metal ureteral stents have become an increasingly popular endoscopic treatment option for ureteral strictures. This study aimed to present the outcomes of Allium ureteral stents in the treatment of refractory ureteral strictures of different origin at a single center. Material and methods: The objective of our study is to present the retrospective analysis of patients treated with an Allium ureteral stent in our department and to evaluate its effectiveness. The success rate of treatment, postoperative resolution in hydronephrosis, symptom and complication rates were evaluated during the follow-up period. The study group consisted of 18 patients with unilateral or bilateral hydronephrosis due to the ureteral stricture of different etiologies. Results: The total percentage of regression of hydronephrosis was observed in 77.78% of cases. The median follow-up period was 575 days. The main causes of hydronephrosis were urolithiasis and its previous treatment, as well as neoplastic diseases of the abdomen and pelvis. Conclusions: The study found that the use of Allium ureteral stents can be an effective and helpful option in the treatment of ureteral strictures, especially in cases where primary treatment options are not suitable.