Persistent fifth arterial arch. Diagnosis during life, with postmortem confirmation.
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Biomedical subjects
Publications and source records attributed to C A Moes.
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An unique case of left innominate vein compression by a leftward origin of a brachiocephalic artery in conjunction with an aberrant right subclavian artery anomaly occurred in a young patient. Aortography and magnetic resonance imaging were invaluable in arriving at a diagnosis.
Tears involving the anterior supravalvar annulus developed in 2 children and an infant following percutaneous balloon pulmonary valvotomy using oversized balloons. The 3 patients had angiographic features of three different types of stenotic valves: usual pulmonary valve stenosis in 1, a form of dysplastic pulmonary valve with supravalvar narrowing in a second, and a doming valve in a neonate. All had a successful reduction in right ventricular outflow tract gradient following the procedure. The pulmonary arterial tears were not associated with balloon rupture or clinical symptoms. It is postulated that the relative deficiency of elastic fibers in the supravalvar commissure makes this site relatively vulnerable to intimal tearing.
Right aortic arch with a left retroesophageal innominate artery (type D double aortic arch) is rare. The diagnosis is made by aortography. The present case is the first known patient to undergo a magnetic resonance imaging study that outlined the anomaly clearly.