Ultrasonic evaluation of fetal kidneys.


Fetal renal morphology, technique and frequency of reliable visualization of the kidneys, and renal size were evaluated in 177 apparently normal fetuses. The kidneys were not reliably identified before 15 post-menstrual weeks and were seen in fewer than 50% of cases prior to 17 weeks. However, between 17 and 22 weeks (the critical time for genetic… (More)