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Familial congenital bicuspid aortic valve: secondary calcific aortic stenosis and aortic aneurysm
Insights
This study describes a patient with ascending aortic aneurysm and congenital bicuspid aortic valve stenosis, a condition also seen in their brother. The findings suggest poststenotic dilation as a cause for cystic medial necrosis.
Area of Science:
- Cardiology
- Genetics
- Pathology
Background:
- Congenital bicuspid aortic valve is a common congenital heart defect.
- Aortic aneurysms can be associated with genetic syndromes like Marfan syndrome.
- Family history is crucial in diagnosing inheritable cardiovascular conditions.
Observation:
- A patient presented with an ascending aortic aneurysm and calcific stenosis of a congenital bicuspid aortic valve.
- The patient's brother also had a stenotic congenital bicuspid aortic valve.
- Cardiac catheterization revealed predominant aortic stenosis and an aneurysm distal to the aortic valvular ring.
Findings:
- The clinical presentation made Marfan syndrome an unlikely initial diagnosis.
- Cystic medial necrosis was identified in the aneurysmal wall.
- Poststenotic dilation is proposed as the likely cause of the cystic medial necrosis.
Implications:
- This case highlights the importance of considering non-syndromic causes for aortic aneurysms in the presence of congenital bicuspid aortic valves.
- Accurate noninvasive evaluation of the ascending aorta is essential, utilizing echocardiography and chest X-rays.
- Understanding the relationship between valvular stenosis, poststenotic dilation, and aortic wall pathology is critical for patient management.
Abstract:
A patient with an aneurysm of the ascending aorta and calcific stenosis of a congenital bicuspid aortic valve, whose brother also had a stenotic congenital bicuspid aortic valve, is described. Predominant aortic stenosis at cardiac catheterization and the presence of an aneurysm distal to and not including the aortic valvular ring made the initial diagnosis of Marfan's syndrome unlikely. Cystic medial necrosis present in the aneurysmal wall probably arose as a consequence of poststenotic dilation. Adequate noninvasive evaluation of the ascending aorta requires echocardiographic studies, as well as a chest x-ray film.