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The fetal echocardiogram at 32 + 6 weeks gestational age indicated an unbalanced common atrioventricular canal favouring the right ventricle. Hypoechoic dropout (a) and flow by colour Doppler (b) in the inlet septum region gave the appearance of a possible ventricular septal defect (arrows), but this is a common area for hypoechoic dropout and diagnosis is uncertain. LV = left ventricle; RV = right ventricle.
