Intestinal dilatation and hyperechogenic bowel, some typical ultrasonographic features of anorectal malformation, were found in the 21st week of a singleton pregnancy. These findings were associated with unilateral renal agenesis and a single umbilical artery. All prenatally diagnosed anomalies were confirmed postpartum. Development of the sonographic appearance of the anorectal malformation, p...

Arterial compliance (C) has been measured in 18 children known to have had a single umbilical artery at birth. Non-invasive ultrasonic Doppler techniques were used to measure C for the aorta, iliac, and leg arteries. Anomalous compliance was found between the two iliac vessels, and it is suggested that this is the result of haemodynamic stress-induced changes during development. The demonstrati...