Fistulas of the lower urinary tract: percutaneous approaches for the management of a difficult clinical entity.
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.
Division of Diagnostic Imaging, Interventional Radiology Section, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Unit 325, Houston, TX 77030-4009, USA.
Rony
R
Avritscher
David C
DC
Madoff
Pedro T
PT
Ramirez
Michael J
MJ
Wallace
Kamran
K
Ahrar
Frank A
FA
Morello
Sanjay
S
Gupta
Ravi
R
Murthy
Kenneth C
KC
Wright
Marshall E
ME
Hicks
D000328:Adult; D000368:Aged; D000465:Algorithms; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D014515:Ureteral Diseases / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy; D014522:Urethral Diseases / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy; D001747:Urinary Bladder Fistula / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy; D014548:Urinary Fistula / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy*