There is an incidence of 1 in every 500 individuals within a normal population. Males are more likely to develop a<unk>  with a preponderance of 2:1. Certain genetic diseases can predispose patients to developing a<unk> : * Edwards Syndrome: 67% * Turner Syndrome: 14-20% * Down Syndrome: <1%
Horseshoe kidney
Page kidney
Multicystic dysplastic kidney
Ectopic kidney
Crossed renal ectopia
Supernumerary kidney
Medullary sponge kidney
Renal segmental hypoplasia