Prenatal diagnosis of congenitally corrected transposition of the great arteries. A case report.

Congenitally corrected transposition of the great arteries (CTGA) is an uncommon congenital cardiac anomaly. Prenatal sonographic diagnosis of CTGA is very difficult because the ventricular outflow tract may appear to arise correctly from the right and left ventricles. Few cases of CTGA diagnosed in utero have been reported. We report a case of CTGA with complete heart block, ventricular septal defect and pulmonary valve stenosis diagnosed at 30 weeks' gestation after the mother was referred to our hospital because of persistent fetal bradycardia.