Ten cases of prenatal diagnosis of isolated hypospadias are presented,
six of them in the second trimester. The echographical basis for the
suspected diagnosis of hypospadias are: anomalous distal morphology of
the penis, small lateral folds (dermal remains of the prepuce), small
penis with ventral incurving and anomalous urinary stream. The embryo
genesis and the clinical utility of prenatal study of the genitals of
the fetus, not only to determine the sex, but also to detect anomalies
, are discussed. (C) 1998 John Wiley & Sons, Ltd.