Diagnóstico prenatal del arco aórtico derecho, importancia de los planos de Yagel. Nuestra experiencia, descripción de 2 casos

Right aortic arch, which belongs to a group of rare malformations, is an uncommon finding (incidence of 0.1%) and few cases of prenatal forms have been described in the literature. Nevertheless, it is not unusual to find these anomalies as the cause of respiratory or digestive disease (refractory to treatment) in adult patients and even as severe vascular processes with high morbidity and mortality. Its variants may cause compressive symptoms and be associated with heart defects (up to 90%) and/or 22q11 microdeletion (up to 46%). The 3 vessels and trachea view is essential for the prenatal diagnosis of right aortic arch. Detection of this condition must be considered an indication for foetal echocardiography, to distinguish its variants, and/or specific chromosome/genetic testing. Isolated right aortic arch is usually asymptomatic, although the outcome of right aortic arch associated with other abnormalities is poor.