Source:http://linkedlifedata.com/resource/umls/id/C0022681
NCI: A developmental disorder of the kidney characterized by cystic dilatation of the medullary collecting ducts, resulting in a spongy gross appearance of the kidney. It may be asymptomatic or complicated by hematuria, infections, or renal stones.,MSH: A non-hereditary KIDNEY disorder characterized by the abnormally dilated (ECTASIA) medullary and inner papillary portions of the collecting ducts. These collecting ducts usually contain CYSTS or DIVERTICULA filled with jelly-like material or small calculi (KIDNEY STONES) leading to infections or obstruction. It should be distinguished from congenital or hereditary POLYCYSTIC KIDNEY DISEASES.