Multicystic kidney dysplasia Multicystic dysplastic kidney SNOMEDCT_US:82525005 Multicystic dysplasia of the kidney is characterized by multiple cysts of varying size in the kidney and the absence of a normal pelvicaliceal system. The condition is associated with ureteral or ureteropelvic atresia, and the affected kidney is nonfunctional. SNOMEDCT_US:204962002 MSH:D021782 Multicystic kidneys UMLS:C3714581 HP:0004715 HP:0000003 Multicystic kidney dysplasia is the result of abnormal fetal renal development in which the affected kidney is replaced by multiple cysts and has little or no residual function. The vast majority of multicystic kidneys are unilateral. Multicystic kidney can be diagnosed on prenatal ultrasound. Multicystic renal dysplasia Renal cyst