On a CT-image the ascending aorta will be on the upper part of the image and the descending aorta will be on the lower part. When you look at these illustrations, you have to realize, that these are views from above, while CT-images have a 'view from feet'. The last branch is the left aberrant subclavian artery. First branch is left common carotid, followed by right carotid and right subclavian artery.Left arch between the left subclavian and left common carotid artery involutes.Mirror image of the left arch with aberrant right subclavian artery.Right Arch with aberrant left subclavian artery: The last branch is the right aberrant subclavian artery. First branch is the right common carotid, followed by the left carotid and the left subclavian artery.Right arch between the right subclavian and right common carotid artery involutes.Left Arch with aberrant right subclavian artery: The two brachiocephalic vessels on the left form the left innominate artery.Posterior part of the left arch involutes.The two brachiocephalic vessels on the right form the right innominate artery.The posterior part of the right arch involutes.This nonpatent remnant persists as a fibrous cord tethering the anterior left arch to the descending aorta.Posterior part of the left arch becomes atretic.If double aortic arch persists, it forms a vascular ring around trachea and esophagus.In the embryo a double arch with two brachiocephalic vessels on each side is present.Right Arch with Aberrant left subclavian.Many of these anomalies are asymptomatic or 'leave alone' lesions, but some of these anomalies are symptomatic and need to be treated.Īs a radiologist we have to be familiar with these anomalies.Ī simple mouse click on an item on the left will bring you directly to this subject. Most of these anomalies are found in children, but sometimes they are discovered later in adulthood. In this review we will discuss the most common vascular anomalies of the aorta, pulmonary vessels and systemic veins in the chest. The second edition of her book entitled Pediatric Body CT will be out next week. Marilyn Siegel is specialized in pediatric and chest radiology. This review is based on a presentation by Marilyn Siegel and was adapted and illustrated for the Radiology Assistant by Robin Smithuis. How to Differentiate Carotid Obstructions.TI-RADS - Thyroid Imaging Reporting and Data System.Esophagus II: Strictures, Acute syndromes, Neoplasms and Vascular impressions.Esophagus I: anatomy, rings, inflammation.Vascular Anomalies of Aorta, Pulmonary and Systemic vessels.Contrast-enhanced MRA of peripheral vessels.Ischemic and non-ischemic cardiomyopathy.Coronary Artery Disease-Reporting and Data System 2.0.Bi-RADS for Mammography and Ultrasound 2013.Transvaginal Ultrasound for Non-Gynaecological Conditions.Acute Abdomen in Gynaecology - Ultrasound.Appendicitis - Pitfalls in US and CT diagnosis.
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