Fistulas of the Lower Urinary Tract: Percutaneous Approaches for the Management of a Difficult Clinical Entity

Abstract

Fistulas of the lower urinary tract are uncommon conditions that may occur spontaneously or after therapy in patients with various pelvic abnormalities. When present, these fistulas are associated with urine leakage, which is often socially distressing and disabling. Unfortunately, factors that lead to the formation of genitourinary fistulas often increase their complexity or preclude surgical repair. A high failure rate is associated with surgical repair, and many patients are not optimal surgical candidates. For such patients, a percutaneous treatment approach is highly desirable. Percutaneous ureteral occlusion combined with insertion of a functioning nephrostomy tube allows complete diversion of urine in those patients in whom nephrostomy alone does not provide adequate relief. Many approaches to percutaneous ureteral occlusion have been used with variable success, including coils and gelatin sponge, isobutyl-2-cyanoacrylate, detachable balloons, radiofrequency electrocautery, ureteral clipping, and solid and soft polymer agents. Furthermore, percutaneous or retrograde ureteral stents may be used to preserve antegrade urine flow, and surgical options are also available. It is essential that the interventional radiologist involved in the care of these patients be familiar with these different techniques as well as with the limitations, pitfalls, and possible complications of their use.

Efficacy of Percutaneous Nephrostomy During Flexible Ureteroscopy for Renal Stone Management

“…PCN is mainly performed for urinary stones, urinary tract infections, acute renal failure, and severe flank pain due to urinary tract obstruction [18-20]. Therefore, patients may undergo fURS in the presence of a PCN opening.…”

Successful management of urethro-ileal pouch fistula by cynoacrylate glue instillation

“…Excretory urography, retrograde urography, cross-sectional contrast imaging, fistulography, barium enema, cystoscopy, etc. are the commonly used investigations for the diagnosis of such fistulae [2]. These fistulae are usually first treated conservatively with urinary and fecal drainage/diversion.…”

Magnetic resonance imaging of vaginal and vulval pathology

“…5a,b) and rectovaginal (Fig. 5c,d) [12]. Seventy-five percent of reported cases in the developed world are due to complications related to abdominal or vaginal hysterectomy.…”