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[Dissecting aortic aneurysm in siblings without Marfan's syndrome]
H Horimi1, T Hasegawa, K Fukushima
1Department of Thoracic and Cardiovascular Surgery, Jichi Medical School.
Kyobu Geka. the Japanese Journal of Thoracic Surgery
|September 1, 1990
Summary
Familial dissecting aortic aneurysm is rare. This report details two siblings with dissecting aortic aneurysms, highlighting smooth muscle degeneration in the aortic media and the absence of Marfan syndrome features.
Area of Science:
- Cardiovascular Medicine
- Genetics
- Pathology
Background:
- Dissecting aortic aneurysm (DAA) is a serious cardiovascular condition.
- Familial occurrence of DAA is uncommon, suggesting potential genetic predispositions.
Observation:
- Two siblings, a 49-year-old brother and a 60-year-old sister, were diagnosed with DAA.
- The brother presented with acute DeBakey type I DAA and aortic regurgitation; the sister with chronic DeBakey type II DAA.
- Neither sibling nor other family members exhibited signs of Marfan syndrome.
Findings:
- Histological examination revealed smooth muscle degeneration in the aortic media for both affected siblings.
- The brother underwent valvuloplasty and false lumen closure, while the sister had ascending aorta replacement with a Dacron graft.
- Both patients are currently alive and well post-intervention.
Implications:
- This case series suggests a possible inherited component in DAA, even without typical syndromic features like Marfan syndrome.
- Understanding the underlying pathology, such as smooth muscle degeneration, is crucial for familial screening and management.
- Further research into the genetic factors contributing to non-syndromic familial DAA is warranted.