CTICasesAortic Spindle
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Imaging findings
Non-contrast CT and sagittal reformats demonstrate a focal, fusiform dilatation of the aorta at the aortic isthmus, immediately distal to the origin of the left subclavian artery and at the site of the ligamentum arteriosum. There are no associated mediastinal hematomas, intimal flaps, or collateral vessels.
Key takeaways
An aortic spindle is a normal anatomical variant characterized by a localized dilatation of the aortic isthmus immediately distal to the left subclavian artery. It is a developmental remnant of the ductus arteriosus and should not be misinterpreted as an acute traumatic aortic injury or pseudoaneurysm.
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