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DOI: 10.1148/rg.24si045508
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RadioGraphics 2004;24:S217-S236
© RSNA, 2004

LOWER GENITOURINARY TRACT IMAGING

Fistulas of the Lower Urinary Tract: Percutaneous Approaches for the Management of a Difficult Clinical Entity1

Rony Avritscher, MD, David C. Madoff, MD, Pedro T. Ramirez, MD, Michael J. Wallace, MD, Kamran Ahrar, MD, Frank A. Morello, Jr, MD, Sanjay Gupta, MD, Ravi Murthy, MD, Kenneth C. Wright, PhD and Marshall E. Hicks, MD

1 From the Division of Diagnostic Imaging, Interventional Radiology Section (R.A., D.C.M., M.J.W., K.A., F.A.M., S.G., R.M., K.C.W., M.E.H.), and the Department of Gynecologic Oncology (P.T.R.), University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Unit 325, Houston, TX 77030-4009. Recipient of a Cum Laude award for an education exhibit at the 2003 RSNA scientific assembly. Received February 13, 2004; revision requested April 2 and received May 11; accepted May 19. K.C.W. has a royalty agreement with Cook; all other authors have no financial relationships to disclose. Address correspondence to D.C.M. (e-mail: dmadoff@di.mdacc.tmc.edu).

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.

© RSNA, 2004

Index Terms: Fistula, genitourinary system, 80.245 • Fistula, therapeutic embolization, 80.1269 • Ureter, abnormalities, 82.245






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