RT Book, Section A1 Bianchi, Diana W. A1 Crombleholme, Timothy M. A1 D'Alton, Mary E. A1 Malone, Fergal D. SR Print(0) ID 1106399360 T1 Multicystic Dysplastic Kidney T2 Fetology: Diagnosis and Management of the Fetal Patient, 2e YR 2015 FD 2015 PB McGraw-Hill Education PP New York, NY SN 978-0-07-144201-5 LK obgyn.mhmedical.com/content.aspx?aid=1106399360 RD 2024/10/03 AB Key PointsMulticystic dysplastic kidney (MCDK) is a severe renal abnormality associated with atretic ureter and absence of normal renal parenchyma, which is replaced by multiple large noncommunicating cysts.MCDK is generally easily diagnosed prenatally, often due to the large size of the kidney and its constituent cysts.It is usually unilateral, while the rare cases of bilateral MCDK present as Potters syndrome.In almost half of the cases of unilateral MCDK, the contralateral kidney will have associated malformations, the severity of which determines the overall prognosis.Management of pregnancy and delivery generally does not need to be changed following the prenatal diagnosis of MCDK.While some cases of unilateral MCDK will regress prenatally or in pediatric life, there is no agreement on need for nephrectomy in those cases with persistent MCDK.MCDK greater than 6 cm, cases in which the MCDK obstructs the diaphragm or gastrointestinal tract, or cases in which hypertension develops will generally require nephrectomy.