Ureteric Stone Management in Crossed-Fused Renal Ectopia With Bilateral Duplex-Collecting System.

Crossed-fused renal ectopia (CFRE) is a rare congenital anomaly where both kidneys are fused on the same side. We report a case of a 52-year-old male patient who presented with central abdominal pain associated with hematuria and dysuria, with a history of left open ureterolithotomy. Abdominal computed tomography (CT) showed an 18-mm left distal ureteric stone and a CFRE with a bilateral duplex-collecting system. Left ureteroscopy and laser lithotripsy with magnetic double-J stent insertion were carried out successfully, and the patient was discharged on the same day in fair general condition.