Flexible ureteroscopy combined with flexible negative pressure suction sheath for calyceal diverticulum stones:a report of 5 cases
10.12483/j.issn.1009-8291.2026.04.004
- VernacularTitle:可弯曲负压吸引鞘联合输尿管软镜治疗肾盏憩室结石5例体会
- Author:
Jia LIU
1
;
Jiyu ZHAO
1
;
Sheng YANG
1
Author Information
1. Department of Urology, Chuiyangliu Hospital Affiliated to Tsinghua University, Beijing 100022, China
- Publication Type:Journal Article
- Keywords:
calyceal diverticulum stones;
ureteral access sheath;
flexible ureteroscopy;
flexible negative pressure suction sheath
- From:
Journal of Modern Urology
2026;31(4):316-318
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the efficacy and safety of fiexible negative pressure suction sheath in the treatment of calyceal diverticulum stones, so as to provide reference for the diagnosis and treatment of this disease.Methods A retrospective analysis was conducted on 5 patients with simple calyceal diverticulum stones treated with flexible ureteroscopy plus fiexible negative pressure suction sheath in our hospital during Jan.2021 and Dec.2024.Data collected included general information, stone location, stone diameter, stone CT value, operation time, postoperative hemoglobin change, and stone free rate.Surgical efficacy and safety were evaluated.Results Among the 5 patients, 4 successfully underwent flexible ureteroscopic lithotripsy, while 1 converted to percutaneous nephrolithotomy due to inaccessible stone location.The median operation time was 120(95-150)min, and the median procalcitonin level was 0.089(0.076-0.112)ng/mL.There was no statistically significant difference in the hemoglobin level between preoperative and postoperative 24-hour measurements(P= 0.075).Abdominal CT scan on postoperative day 1 showed no residual stones, with Clavien grade I ureteral injury in 1 patient. No complications occurred during the 1-month follow-up after surgery.Conclusion Holmium laser lithotripsy under flexible ureteroscopy is one of the common surgical treatment for calyceal diverticulum stones.Combination with fiexible negative pressure suction sheath solves the problem of stone clearance during surgery, reduces the stone residual, demonstrates favorable safety, making flexible ureteroscopy an advantageous approach for treating calyceal diverticulum stones.
