Interatrial septal aneurysm
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Interatrial septal aneurysm is defined as an abnormal protrusion of the interatrial septum of more than 15 mm beyond normal excursion in adults and 5 mm in children.
It is encoutered in approximately 1 % of the pediatric population. It can be limited to the fossa ovalis or involve the entire interatrial septum.
Clinical manifestation
Interatrial septal aneurysm is associated with an increased incidence of peripheral arterial embolism and increased stroke risk.
It is known to be associated with atrial septal defect and patent foramen ovale.
Differential diagnosis
-<p><strong>Interatrial septal aneurysm</strong> is defined as an abnormal protrusion of the interatrial septum of more than 15 mm beyond normal excursion in adults and 5 mm in children.</p>-<p>It is encoutered in approximately 1 % of the pediatric population. It can be limited to the <a title="fossa ovalis " href="/articles/fossa-ovalis">fossa ovalis </a>or involve the entire interatrial septum.</p>-<h4>Clinical manifestation</h4>-<p>Interatrial septal aneurysm is associated with an increased incidence of peripheral arterial embolism and increased stroke risk.</p>-<p>It is known to be associated with <a title="atrial septal defect " href="/articles/atrial-septal-defect">atrial septal defect </a>and <a title="patent foramen ovale" href="/articles/patent-foramen-ovale">patent foramen ovale</a>.</p>-<h4>Differential diagnosis</h4>-<ul><li><a title="Accessory left atrial appendage" href="/articles/accessory-left-atrial-appendage">accessory left atrial appendage</a></li></ul>- +<p><strong>Interatrial septal aneurysm</strong> is defined as an abnormal protrusion of the interatrial septum of more than 15 mm beyond normal excursion in adults and 5 mm in children.</p><p>It is encoutered in approximately 1 % of the pediatric population. It can be limited to the <a href="/articles/fossa-ovalis">fossa ovalis </a>or involve the entire interatrial septum.</p><h4>Clinical manifestation</h4><p>Interatrial septal aneurysm is associated with an increased incidence of peripheral arterial embolism and increased stroke risk.</p><p>It is known to be associated with <a href="/articles/atrial-septal-defect">atrial septal defect </a>and <a href="/articles/patent-foramen-ovale">patent foramen ovale</a>.</p><h4>Differential diagnosis</h4><ul><li><a href="/articles/accessory-left-atrial-appendage">accessory left atrial appendage</a></li></ul>
References changed:
- 3. Mattioli A, Aquilina M, Oldani A, Longhini C, Mattioli G. Atrial Septal Aneurysm as a Cardioembolic Source in Adult Patients with Stroke and Normal Carotid Arteries. A Multicentre Study. Eur Heart J. 2001;22(3):261-8. <a href="https://doi.org/10.1053/euhj.2001.2293">doi:10.1053/euhj.2001.2293</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/11161938">Pubmed</a>
Images Changes:
Image 1 CT (C+ arterial phase) ( create )
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