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During rigid ureteroscopic lithotripsy, it is often encountered that the ureter is difficult to access. Attempts to advance the ureteroscope make the surgery more difficult. This study evaluated the preoperative predictive factors associated with difficult ureteral access (difficult ureter (DU)) during URS and assessed if clinical outcomes differed according to the degree of DU. This study identified 217 patients who underwent rigid ureteroscopic (URS) lithotripsy for the management of ureter stones between June 2017 and July 2021 in a tertiary hospital in Korea. In this group, preoperative factors were identified using univariate and multiple logistic regression analyses that could predict the degree of DU. Additionally, we also evaluated differences in treatment outcomes depending on the degree of DU. In 50 URS cases (22.0%), ureteral access using a ureteroscope was difficult. In the univariate and multivariate analyses, the degree of hydronephrosis was associated with the degree of DU. Treatment outcomes, extended operation times, low stone-free rate, postoperative pain, and secondary treatment were also significantly associated with the degree of DU. Clinicians can counsel patients with a lesser degree of hydronephrosis and approach their management accordingly.
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http://dx.doi.org/10.3390/jcm12144591 | DOI Listing |
Arch Esp Urol
August 2025
Department of Urology, Foshan Maternal and Child Health Hospital, 528000 Foshan, Guangdong, China.
Ureteropelvic junction obstruction (UPJO), characterised by prenatal or postnatal renal pelvis dilation, represents the primary cause of congenital paediatric hydronephrosis. UPJO may lead to impaired renal function in paediatric patients. Its pathogenesis includes genetic predisposition and anatomical abnormalities.
View Article and Find Full Text PDFSci Rep
September 2025
Department of Urology, The Fifth Affiliated Hospital of Guangzhou Medical University, 621 Gangwan Road, Huangpu District, Guangzhou, 510700, Guangdong, China.
Renal parenchyma thickness and hydronephrosis degree may predict stone-free rate (SFR) after lithotripsy. This study combined these factors and introduced a new index, the ratio of renal parenchymal volume to renal volume (RPRV) to investigate its prediction role of SFR after retrograde intrarenal surgery (RIRS). We collected data from 119 adult patients with upper ureteral or kidney stones who underwent RIRS from March to September 2023.
View Article and Find Full Text PDFBMC Urol
August 2025
Department of Urology, the Third People's Hospital of Yunnan Province, No. 292 Beijing Road, Guandu District, Kunming, 650011, China.
Background: To evaluate ureteral wall thickness (UWT) at the ureterovesical junction (UVJ) measured by ultrasound for predicting spontaneous passage (SP) of uncomplicated UVJ stones.
Patients And Methods: We retrospectively reviewed 170 patients ≥ 18 years old, and size ≤ 10 mm of single UVJ stone, who were examined and treated in the Third People's Hospital of Yunnan Province from January 2020 to January 2024. The analysis included the size of the stones, the maximum UWT at the stone site measured by ultrasound, the degree of hydronephrosis, and the time of stone removal.
BMC Urol
August 2025
Department of Urology, University of Health Sciences, Bakirkoy Dr.Sadi Konuk Training and Research Hospital, Istanbul, Turkey.
Background: According to our hypothesis, a classification system that grades stone impaction may better predict surgical success and complications. Therefore, we developed a new classification system, and in this study, we aimed to evaluate the effect of stone impaction and its degree on success and complications of ureteroscopic lithotripsy (URS-L), as well as to investigate preoperative factors predicting stone impaction and its degree.
Methods: Data of patients over the age of 18 years who underwent URS-L for a single ureteral stone were prospectively collected.
J Endourol
August 2025
Department of Surgery, Section of Urology, University of Manitoba, Winnipeg, Canada.
Previous studies have demonstrated the feasibility of bedside placement of ureteral stents in cases of acute ureteral obstruction. However, there is a lack of evidence comparing its efficacy to traditional stent placement in the operating room with fluoroscopy. We compared the clinical outcomes of bedside ureteral stent placement with the current standard of care.
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