Related Experiment Video
Updated: Jan 26, 2026

Free Radicals in Chemical Biology: from Chemical Behavior to Biomarker Development
Published on: April 15, 2013
A new modification of tubeless cutaneous ureterostomy following radical cystectomy
Arman Tsaturyan1,2, Serine Sahakyan3, Armen Muradyan4
1Department of Urology, Yerevan State Medical University, Yerevan, Armenia. tsaturyanarman@yahoo.com.
Purpose:
Cutaneous ureterostomy is a well-established surgical technique of incontinent urinary diversion treatment. However, stoma stenosis limits widespread utilization of this technique. We present our modification of constructing single-site tubeless cutaneous ureterostomy aiming to reduce stomal complications and improve catheter-free rate of those patients.
Materials And Methods:
In 2016-2017, 30 patients with 60 renal units underwent modified and 30 patients with 60 renal units standard technique. The main differences of our method from previously described techniques were the preservation of parietal peritoneum and fixation of ureteral orifices one to another. Catheter-free rate was calculated in all patients with a minimum follow-up period of 12 months. In total, 52 patients, 26 from the modified cutaneous ureterostomy group, and 26 from the standard cutaneous ureterostomy group were available for the final analysis.
Results:
The patients' mean age was 63.1 years. The median follow-up period was 25.8 months (ranging from 1-37 months). The catheter-free rate was achieved 76.9% (20 patients) in the modified group compared to 42.3% (11 patients) in the standard group (P value = 0.013). No statistically significant differences were observed between two groups for late complications and readmission rates.
Conclusions:
Our technique of single-site-modified cutaneous ureterostomy is a safe and simple surgical technique with similar postoperative complications rate and better catheter-free rate compared to standard cutaneous ureterostomy. We believe that this technique could be a method of choice not only for candidates for cutaneous ureterostomy but also for selected patients for ileal conduit.
Related Concept Videos
Histone Modification
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
Radical Reactivity: Nucleophilic Radicals
Radical Reactivity: Electrophilic Radicals
Spreading of Chromatin Modifications
Writers
The writer...
Radical Autoxidation
Behavior Modification
A real-world application of operant conditioning principles is applied...

