It is thought to be congenital or the consequence of vesicoureteral reflux. in IVU “Slit scar” is seen.
Renal segmental hypoplasia
Multicystic dysplastic kidney
Renal hypoplasia
Autosomal recessive polycystic kidney disease
Crossed renal ectopia
Supernumerary kidney
Horseshoe kidney
Renal agenesis