Uretero-Arterial Fistula - Not So Rare?

The first uretero-arterial fistula (UAF) was reported in 1908 by Moschcowitz. In 2009, a systematic review identified 139 cases. Since then a further 23 cases were described with 19 cases originating from a single center. It has been recognized as a very rare condition in the past. However, more recently, the increasing incidence of UAF has led us to believe that this condition is more frequent than previously described. Aging population, improved cancer survival and extensive multimodal pelvic cancer treatments have been recognized as culprits for the increased incidence of UAFs. We have reviewed literature on UAFs, identified risk factors, patho-physiology and treatment options. Also, we present a case of fistulous communication between the internal iliac artery and ureter in a patient with a potential risk factor previously not described in the literature.