TY - CHAP M1 - Book, Section TI - The Fetal Genitourinary System A1 - Benson, Carol B. A1 - Doubilet, Peter M. A2 - Fleischer, Arthur C. A2 - Abramowicz, Jacques S. A2 - Gonçalves, Luis F. A2 - Manning, Frank A. A2 - Monteagudo, Ana A2 - Timor, Ilan E. A2 - Toy, Eugene C. PY - 2017 T2 - Fleischer's Sonography in Obstetrics and Gynecology: Textbook and Teaching Cases, 8e AB - Key TermsRenal agenesis: congenital absence of the kidneys.Potter syndrome: constellation of fetal and neonatal complications, including lung hypoplasia and facial and skeletal abnormalities, as a result of severe prolonged oligohydramnios, most often from renal disease, classically due to renal agenesis.Renal ectopia: abnormal position of one or both kidneys, in a location other than within the renal fossa.Urinary tract dilation: expansion of the renal collecting system with fluid, often due to urinary tract obstruction; sometimes called hydronephrosis.Renal dysplasia: abnormal renal parenchyma causing impaired renal function, often the result of severe or complete urinary tract obstruction in utero.Polycystic kidneys: hereditary syndrome, usually due to an autosomal recessive genetic disorder, causing abnormal development of the kidneys, with multiple parenchymal cysts and impaired renal function.Lower urinary tract dilation: dilation of the bladder and sometimes the urethra, typically due to obstruction of the bladder outlet, most often the result of posterior urethral valves but sometimes due to distal urethral stenosis or atresia or nonobstructive causes. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/29 UR - obgyn.mhmedical.com/content.aspx?aid=1151034373 ER -