Bilateral ureteric quadruplication with renal calculus.

Ureteric quadruplication is an extremely rare congenital anomaly. We present radiologic images of a young woman with a renal calculus with bilateral ureteric quadruplication. She presented with right flank pain, and the intravenous urogram revealed a calculus in the superior calyx that drained into the upper most moiety of a partially quadruplicated ureter.