Intravenous Pyelography in Infants with Single Umbilical Artery

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Abstract
IN 1955 Benirschke and Brown1 reported extensively on the occurrence of congenital anomalies in association with the absence of one of the two umbilical arteries. This study, together with previous and subsequent investigations, has stimulated interest in the value of this defect as a means of early recognition of neonatal malformations. Prospective studies (Table 1) have shown the incidence of single umbilical artery to vary from 0.2 to 1.3 per cent in consecutive single births and from 0 to 7 per cent in twin births.2 3 4 5 The frequency of congenital anomalies in such series has ranged from 20 to 47 per . . .