Diverticulum reflux

Refluxing ureters can be treated endoscopically with sub-ureteric injection of polytetrafluoroethylene paste (Polytef), the STING procedure. However, ureteric obstruction has been described as a complication (8). Urinary incontinence has also been treated by periurethral or submucosal injections of Polytef, but reports of urinary obstruction (9,10) and poor long-term success (11,12) have limited the range of indications for this treatment. Other reported complications of Teflon injection for stress urinary incontinence include periurethral abscess, urethral diverticulum. Teflon granuloma with urethral wall prolapse (13), and microembolization (14). 

Fig. 18.8a,b. Voiding cystourethrogram in a child with bilateral duplex systems, a There is significant reflux into the lower pole moiety of a right duplex system and a right ureterocele obstructing the upper pole moiety (arrow), b At the end of micturition there is prolapse of the ureterocele mimicking a bladder diverticulum... 

---