Truncus arteriosus (TA) is a rare congenital cardiovascular anomaly characterized by a single arterial trunk arising from the heart by means of a single semilunar valve (<I>i.e.</I> truncal valve). Pulmonary arteries originate from the common arterial trunk distal to the coronary arteries and proximal to the first brachiocephalic branch of the aortic arch. TA typically overrides a large outlet ventricular septal defect (VSD). The intracardiac anatomy usually displays situs solitus and atrioventricular (AV) concordance.
[Truncus arteriosus: an autosomal recessive disease?].
le Marec B, Odent S, Almange C, Journel H, Roussey M, Defawe G. J Genet Hum. 1989;37(3):225-30.
The authors compare the situation with hypoplastic left heart and think that some cases of truncus arteriosus would have an autosomal recessive inheritance.
