Abstract
In a large prospective Swedish study, the incidence of prenatally detected renal anomalies was 0.28 % in which two-thirds (0.18 %) were hydronephrosis. A British study, in which 99 % of the pregnant population in Stoke-on-Trent were scanned at 28 weeks’ gestation, demonstrated hydronephrosis prenatally in 1.40 % of cases, which was confirmed postnatally in 0.65 % [2]. Others have reported a 1–3% incidence of ANH [1–5]. These authors defined prenatal hydronephrosis as an anteroposterior (A-P) diameter of the renal pelvis greater than 5 mm but noted the lack of consensus on the definition of antenatal hydronephrosis [6–8]. With the rapid improvement of ultrasound technology, the incidence of detection of renal anomalies may be changing
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The authors acknowledge the assistance of Carol E. Barnewolt, M.D., for providing many of the fetal ultrasound images.
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Diamond, D.A., Lee, R.S. (2016). Clinical Perinatal Urology. In: Avner, E., Harmon, W., Niaudet, P., Yoshikawa, N., Emma, F., Goldstein, S. (eds) Pediatric Nephrology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-43596-0_3
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