Association Between Focal Segmental Glomerulosclerosis and Cross-Fused Renalectopia: A New Cause of Secondary Focal Segmental Glomerulosclerosis or a Casual Association?

Cross-fused renal ectopia is a rarely described congenital kidney anomaly. It can occur in association with ureteropelvic obstruction, vesicoureteral reflux, and multicystic dysplasia, which sometimes leads to nephrolithiasis and recurrent urinary infection. However, complications related to glomerulopathies are rare in patients with congenital kidney anomaly. Here, we report a case of cross-fused renal ectopia associated with focal segmental glomerulosclerosis (FSGS). The initial clinical findings suggested the possibility of secondary FSGS; nonetheless immunosuppression was successfully done. The case demonstrates a never-before reported association in an asymptomatic patient. World J Nephrol Urol. 2015;4(1):183-185 doi: http://dx.doi.org/10.14740/wjnu207w