Dear Doctor : My father running 78 yrs, hving bp 120/74, no sugar. Please advise your suggestion on basis of below comments in his medical report.Both Kidney - No focal lesion,Corticomedullary differentiation is lost, no calculus. PCS & ureter are not dilated.impression : Bilateral contracted kidneys - medical ranal disease III, normal sonographic study of liver,gb,pancreas,spleen,bladder & prostate