[Arterioureteral fistulas in the last 10 years at the University of Lübeck].

Introduction: Arterioureteral fistulas are rare, life-threatening, and difficult to diagnose. Risk factors are medical interventions in the lesser pelvis (general, urological, gynecological, and vascular surgery), radiation therapy of the lesser pelvis, permanent double J catheters, and previous vessel malformations.
Materials and Methods: We retrospectively evaluated all cases of arterioureteral fistulas registered over the last 10 years in the clinic's documentation system. For all cases, clinical symptoms, diagnostics, therapies as well as clinical outcome were evaluated.
Results: Four of the 5 patients were women. The most common initial symptom was a gross hematuria (4/5). All patients had a permanent double J catheter after extensive surgery of the lesser pelvis. In one case the initial diagnosis was done by retrograde ureterography, in 2 patients by provocative angiography and in the other 2 cases with a laparotomy due to cardiovascular problems. Three patients were treated by open surgery and 2 patients were treated by stenting of the iliac artery. One patient died, 2 patients had a permanent kidney fistula, and 2 patients continued treatment with a permanent double J catheter.
Conclusion: Based on the more aggressive therapy regimens, we expect that the number of patients presenting with arterioureteral fistulas will continue to rise. The identification of these patients based on their risk profile is essential.