Fig. 2From: Diagnosis and treatment of congenital tricuspid valve malformation in a case of monozygotic twinsa The electrocardiogram of Twin 1 shows a complete right bundle branch block. b the Chest X-ray of Twin 1 shows an enlarged right atrium, a clear lung field, and a cardiothoracic ratio of 0.5. c Twin 1’s CT scan, with an arrow showing tricuspid annulus enlargementBack to article page