Allium covered metal stent for treatment of malignant ureteral obstruction

• Published in: Frontiers in surgery 2024-11, Vol.11, p.1445808
• Main Authors: Qing, Jing, Hu, Ke, Zhang, Xuan, Luo, Huaming, Chen, Jiangchuan, Li, Changlong, Zhang, Jiamo
• Format: Article
• Language: English
• Subjects: allium; endoscopic treatment; malignant ureteral obstruction; metal stent; Surgery; ureteral stenting; ureteroscopy
• ISSN: 2296-875X; 2296-875X
• DOI: 10.3389/fsurg.2024.1445808

Malignant ureteral obstruction (MUO) has the potential to result in a range of outcomes, including varying degrees of hydronephrosis and renal impairment. Allium covered metal stents have provided a new, highly effective treatment option for MUO. Our objective was to evaluate the safety and efficacy of the Allium covered metallic stent for the treatment of malignant ureteral obstruction. Clinical data of 29 patients who underwent endoscopic insertion of an Allium ureteral stent between October 2019 and August 2021 at Yongchuan Hospital, affiliated with Chongqing Medical University, were analyzed retrospectively. At one, three, six and 12 months after insertion, serum creatinine was measured, the width of the renal pelvis was rechecked under ultrasound guidance, and the position and shape of the stent were checked by abdominal x-ray. Data on long-term stent patency, incidence of complications, changes in renal function and hydronephrosis grade were collected and analyzed. Ureteral stent symptom questionnaire (USSQ) was administered preoperatively and after six months in 22 patients with previous stent history. Allium covered metal stents (  = 33) were implanted successfully in 29 patients who were followed for three to 22 months, with 32/33 stents remaining patent. Serum creatinine levels decreased in 17 patients (