Report of Four Cases of Single-Site Percutaneous Vesicoscopy access for Extraction of Bladder Stones after Enterocystoplasty

Introduction: Bladder stones formation is a common problem following augmentation cystoplasty. Standard techniques such as endoscopic lithotripsy and open surgery are questionable because of the number and size of the calculi and their high relapse rate. We describe our experience with a minimally invasive technique using the One Port through a single percutaneous access. Materials and Methods: Between 2012 and 2014, 4 percutaneous extractions of bladder calculi using the One Port were performed on 4 patients with bladder augmentation. In all cases prior bladder enlargement was performed for neuropathic bladder dysfunction. The procedure consisted of percutaneous placement of the One Port through a 3 cm skin incision, the bladder stones were visualized and collected in an endobag. The One Port’s working channels were then removed allowing the stone extraction from the endobag. The operative time, blood loss and chemical composition of calculi were evaluated. Results: Percutaneous extraction was successful in all cases with a controlled bladder stone-free status and no surgical complication. The extraction of urolithiasis was done without scattering. Our experience shows that this procedure is an interesting technique that needs to be thoroughly evaluated on a larger number of patients. Conclusion: As recurrent stone formation is expected to occur in children with an augmented bladder, this technique appears to be suitable and reliable for bladder calculi removal during the long term follow up of frequently multi-operated patients.