Congenital obstructive lesions of the right aortic arch
In the setting of normal cardiac situs, a right-sided aortic arch is uncommon. When a right arch does occur, it is typically in conjunction with other congenital cardiovascular anomalies, especially defects with abnormal right ventricular outflow. Congenital obstruction of a right arch, caused by coarctation, interruption, or cervical arch, is extremely rare. We reviewed our experience and all reported cases of right aortic arch with coarctation of the aorta, interrupted arch, or obstruction of a cervical arch in the setting of normal cardiac situs and topology. Since 1992, 4 such patients have undergone repair at our institution, including 1 with interrupted arch, 1 with coarctation of a mirror image arch, and 2 with obstruction of a cervical arch. In addition to these 4 patients, 38 others have been described in the published reports: 15 with interrupted arch, 19 with coarctation, and 4 with obstruction of a cervical arch. Associated cardiac defects were uncommon, except for ventricular septal defect in patients with interrupted arch, but abnormalities of the brachiocephalic vessels were frequent. Except for most of the patients with interrupted right arch, the majority of patients described have undergone successful surgical...Continue Reading
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