IMPORTANT: We currently have a number of bugs related to image cropping and are actively trying to resolve them. In the meantime, we have disabled cropping. Apologies for any inconvenience. Stay informed: radiopaedia.org/chat

Interatrial septal aneurysm

Case contributed by Imran Ahmad Khan
Diagnosis certain

Presentation

Patient with dyslipidemia with chest pain on exertion from few weeks. Treadmill exercise testing - ECG (TMT) was positive for inducible ischemia. CT coronary angiogram was done to evaluate for coronary artery disease.

Patient Data

Age: 45 years
Gender: Male
ct

An interatrial septal aneurysm is noted with a saccular formation of the interatrial septum bulging into the left atrium. The aneurysm is protruding ~16 mm beyond the plane of the atrial septum. The diameter at the base of the aneurysm is ~ 27mm. There is no atrial septal defect or any obvious left to right shunt. 

Case Discussion

Aneurysm of interatrial septum is a rare but a well-recognized entity. Often found incidentally at 2D-Echo or CT coronary angiograms. The clinical significance is uncertain when it is an isolated abnormality. It may some times be associated with a patent foramen ovale or an atrial septal defect. There is a significantly increased risk of cryptogenic stroke when it is associated with a patent foramen ovale.

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.