CTICasesAortic dissection
Imaging findings
Chest CT shows marked aneurysmal dilatation of the aortic root and a Stanford Type A dissection flap extending from the aortic root through the ascending aorta and arch to the origin of the innominate artery, in a patient with Marfan syndrome.
Key takeaways
Aortic root dilatation and dissection are classic cardiovascular manifestations of Marfan syndrome. Because the aortic root is intrapericardial and not visible on standard chest radiographs, CT is essential for early diagnosis and surgical planning (e.g., using a Valsalva graft to preserve the aortic valve).
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