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.
Diagnostic imaging is a form of medical imaging that is performed with the intention of diagnosing disease, in contrast with medical imaging conducted to monitor the progress of a disease, or to guide a medical procedure.