Percutaneous transilial access for stone removal in crossed fused renal ectopia.

A case of crossed fused renal ectopia with urosepsis due to multiple struvite calculi in the left lower pole of the orthotopic renal unit is presented. The patient had a neurogenic bladder secondary to myelodysplasia, bilateral ureteral reflux, and had undergone multiple orthopedic operations previously, including posterior iliopsoas transplantation through the iliac bone (Sharrard procedure). After controlling the infection, nephrostolithotomy was performed. Three percutaneous accesses including one through the opening in the left iliac bone were required to gain access to all the stones. The patient was rendered stone free and subsequently underwent bladder augmentation and ureteral reimplantation. The management of complicated renal units is reviewed with respect to crossed renal fusion.