The diagnostic study of<unk>  for<unk>  kidney<unk>  is ultrasound. Findings on an ultrasound diagnostic of<unk>  kidney<unk>  include, atleast three unilateral or bilateral cysts in patients 15 - 39 years old, atleast two cysts in each kidney in patients 40 - 59 years old, atleast four cysts in each kidney in patients 60 years of age or older.
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