PMC3100108_01
Echocardiogram of Twin B showing overriding aorta and right ventricular hypertrophy.
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fig1
Cardiac evaluation revealed the patient to be in sinus rhythm and echocardiography confirmed the diagnosis of Tetralogy of Fallot with mild right ventricular outflow tract obstruction; no ductal shunt was appreciated (Figure 1).
Autopsy of Twin B heart and lungs showing small sized pulmonary artery and right ventricular hypertrophy.
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TOF and the pulmonary artery was markedly diminished in size. The ductus arteriosus could not be demonstrated (Figure 2).
Echocardiogram of Twin A showing small pulmonary annulus and dilated distal branch of pulmonary artery.
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Tetrology of Fallot and pulmonary regurgitation. The main pulmonary artery annulus was small and measured 2.5 mm and the distal branch of pulmonary arteries measured 4.5 mm (Figure 3).