Polycystic kidney disease (PKD) is a genetic disorder characterized by the growth of numerous cysts in the kidneys. The kidneys are two organs, each about the size of a fist, located in the upper part of a person's abdomen, toward the back. The kidneys filter wastes and extra fluid from the blood to form urine.
diagnostic (comparative more diagnostic, superlative most diagnostic) 1  of, or relating to diagnosis. 2  characteristic of a particular disease.
of, relating to, or used in diagnosis. 2. serving to identify or characterize; being a precise indication. noun. 3. diagnosis (def 1). 4. a symptom or characteristic of value in diagnosis.