Can the inferior mesenteric artery cause ureteropelvic junction obstruction?

Ureteropelvic junction obstruction (UPJO) is a pathological condition characterized by obstruction of the junction between the renal pelvis and ureter, often resulting in dilatation of the renal collecting system. Aberrant accessory vessels or early branching of the inferior pole vessels are the most common causes of extrinsic UPJO. The inferior mesenteric artery has not been reported as a common cause of UPJO. Here, we report the case of a 7-year-old patient with UPJO and an anomalous inferior mesenteric artery. The patient was initially diagnosed with congenital uropathy during the evaluation for primary enuresis.