CTICasesCrisscross Heart
Imaging findings
Echocardiography and 4D flow MRI demonstrate a crisscross heart with L-transposition of the great arteries, pulmonary atresia, and a large ventricular septal defect (VSD). The left atrium drains into the right ventricle which gives rise to the aorta, while the right atrium drains into the left ventricle. The pulmonary circulation is supplied by a lateral tunnel Fontan pathway.
Key takeaways
Crisscross heart is an extremely rare congenital cardiac anomaly characterized by crossing of the systemic and pulmonary venous streams due to twisting of the heart's ventricles around their long axis. It is frequently associated with other congenital cardiac defects, such as transposition of the great arteries and VSD.
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