CTICasesInteratrial septal aneurysm
Imaging findings
Contrast-enhanced chest CT shows a localized, pouch-like bulging of the interatrial septum into the right atrium measuring 2 cm in excursion, without any associated thrombus or shunting.
Key takeaways
Interatrial septal aneurysm is a benign, frequently incidental congenital redundancy of the atrial septum. While typically left alone without any intervention, it has a reported association with patent foramen ovale (PFO) and cardiogenic embolic events.
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