Congenitally corrected transposition of great arteries is a rare congenital heart defect. The clue of the abnormality is the inversion of the ventricles which caused abnormal atrioventricular and ventriculoarterial connections. This defect is seldom identified prenatally, much more seldom than the simple transposition of the great arteries, even though, we can observe it, on the image of 4 chambers of the heart. Prenatal diagnosis of this defect, at the 24th week of pregnancy and during the routine ultrasound scan, is being described below. The echocardiographical features of the congenitally corrected transposition of great arteries are being presented, with reference to the differences in the image of the 4 chamber view.