CTICasesAortic Coarctation with Bicuspid Aortic Valve
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Imaging findings
CT angiography demonstrates a severe coarctation of the aorta distal to the origin of the left subclavian artery. Extensive, tortuous collateral vessels (including internal mammary and intercostal arteries) bypass the stenosis to reconstitute the descending aorta, and a bicuspid aortic valve is present.
Key takeaways
Aortic coarctation is a congenital narrowing of the aorta that typically presents with upper extremity hypertension and lower extremity hypoperfusion. The presence of extensive intercostal and internal mammary arterial collaterals is a sign of hemodynamic significance, and it is frequently associated with other congenital cardiac anomalies, particularly a bicuspid aortic valve.
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