Abstract
A retroaortic innominate vein (RAIV) is a rare anomaly that passes posterior to the ascending aorta to join the superior vena cava and is associated with congenital heart disease (CHD). The RAIV and normal left innominate vein (LIV) rarely duplicate. The etiology of the RAIV and its relationship with CHD remains unknown. We report a case involving a 1-month-old baby girl with RAIV and supracardiac total anomalous pulmonary venous connection (TAPVC). Transthoracic echocardiogram demonstrated a pulmonary venous confluence (CPV) posterior to the left atrium, an abnormal vertical vein (VV) that originated from the CPV, and a normally positioned LIV. Three-dimensional cardiac computed tomography revealed the VV and RAIV to which it merged. This is the first reported case of a combination of RAIV and isolated TAPVC. We speculate that the VV is connected to the CPV during fetal life, thus leaving the RAIV behind. The RAIV may be detected in various forms with the development of new diagnostic imaging methods. Although a RAIV itself does not require treatment, establishing a correct diagnosis before invasive tests and procedures are performed can help prevent unexpected complications.
Highlights
Retroaortic innominate vein (RAIV) is a rare anomaly that passes posterior to the ascending aorta to join the superior vena cava (SVC) [1–3]
The RAIV can be further complicated by different congenital heart disease (CHD) and diverse morphologies
The left innominate vein (LIV) is formed during fetal life from an inter-anterior cardinal anastomosis connecting the left and right anterior cardinal veins
Summary
Retroaortic innominate vein (RAIV) is a rare anomaly that passes posterior to the ascending aorta to join the superior vena cava (SVC) [1–3]. An anomalous vessel flowing from left to right behind the aorta was observed, and the left innominate vein (LIV), which was positioned normally, was not so dilated (Figures 1C,D). This test alone was not enough to fully understand the structure and positioning of the blood vessels. She was discharged 1 month postoperatively, with no restrictions in the activities of daily living and no significant problems with her postoperative course She has been followed up with regular physical examinations, chest radiography, electrocardiography, and echocardiography, and no significant sequelae, such as PVO or severe supraventricular arrhythmias, have been noted. The patient’s parents provided informed consent for publication of this report
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