Infravesical Obstruction in a Boy with Orthotopic Ureterocele: Clinical Case

Background. Ureterocele is a cystic dilatation of the distal ureter. Orthotopic ureterocele is relatively rare form of this disease, and it is commonly diagnosed in female children. The clinical picture of orthotopic ureterocele is usually not significant, and the management variants are unclear. Clinical case description. Ultrasound has revealed dilatation in the distal part of the left ureter (up to 6.5 mm) and cyst formation (diameter of 8 mm, thick walls) in the bladder in 8-months-old boy. The retrograde voiding cystourethrogram has shown no signs of vesicoureteral reflux. The evaluation of the voiding rhythm was performed: the volume of residual urine was > 30%, it indicates the infravesical obstruction. The child underwent diagnostic cystourethroscopy, transurethral resection of the ureterocele, intubation ureteral catheter in the left ureter (all procedures was performed under general anesthesia). There were no enlargements of calices-pelvis system and ureters 12 months after surgery according to urinary system ultrasound. Clinical urine test with no inflammatory changes. Voiding rhythm was without pathology.Conclusion. The widespread implementation of high-tech and minimally invasive methods of diagnosis and management allow us to achieve timely detection and provide effective treatment for children with ureterocele.