Abstract
Ultrasound is commonly performed in pregnant patients with the specific purpose to identify fetal abnormalities. Abnormal findings indicating the presence of a urinary tract anomaly are identified in a tangible proportion of cases, thus triggering a multidisciplinary discussion on the relevance of the finding. Mild enlargement of the urinary tract, the most common entity, is a normal variant in many cases. The probability of an anomaly depends upon the degree of enlargement, but the outcome remains difficult to predict. Although in general a specific diagnosis of fetal renal anomalies is difficult, some entities have a clear-cut appearance in early gestation. Such list includes mostly bilateral renal agenesis, severe urethral obstruction, Meckel syndrome, multicystic kidney, and bladder and cloacal exstrophy.
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Pilu, G. (2015). Prenatal Diagnosis or Urological Abnormalities. In: Lima, M., Manzoni, G. (eds) Pediatric Urology. Springer, Milano. https://doi.org/10.1007/978-88-470-5693-0_1
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