Unusual Causes of Obstructive Acute Kidney Injury: A Case Series.

Obstructive uropathy accounts for about 5%-10% of all cases of acute kidney injury. Unlike the pediatric population, in which congenital anomalies of the urinary tract account for the majority of cases of urinary tract obstruction (UTO), malignancies account for the majority of upper UTO in adults. We report three rare cases of obstructive acute kidney injury. One case was secondary to an inflammatory abdominal aortic aneurysm (IAAA), and two cases were secondary to retroperitoneal fibrosis (RPF). The reason for presenting this case series is the fact that but IAAA and RPF are rare and, because of the rarity of the disease, there are no specific guidelines regarding its evaluation and optimal management. This addition to the literature in the form of case reports and a case series might help us to better understand the disease and help in formulating standard management protocols.