Crossed fused renal ectopia: Challenges in diagnosis and management
A 14-month-old girl, during investigation for vomiting and presumed abdominal pain, was found to have an empty left renal fossa and right hydronephrosis on ultrasonography. Further investigations with radionuclide cortical and renal dynamic scans revealed a normally functioning crossed ectopic left kidney fused with a normally located right kidney, which showed poor function and obstruction at the pelviureteric junction. A right dismembered pyeloplasty was performed. Postoperatively both kidneys show stable function and normal drainage pattern on radionuclide renal dynamic scan.