Ureteropelvic junction obstruction and renal calculi. Pathophysiology and implications for management.

Ureteropelvic junction (UPJ) obstruction is a well-studied phenomenon in terms of its etiology, implications for renal function, and clinical management. The presence of concomitant ipsilateral calculus disease, however, introduces a confounding variable into the understanding of this entity. This article discusses the relationship between renal calculi and UPJ obstruction as it pertains to their pathophysiology and clinical management as combined entities.