Presentation
Shortness of breath.
Patient Data
Age: 50 years
Gender: Female
From the case:
Mitral regurgitation
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Info
Enlarged cardiac silhouette with "double density" sign indicating enlargement of the left atrium. Lungs clear, no pleural effusion.
From the case:
Mitral regurgitation
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Info
Severe mitral regurgitation with large regurgitant jet within the left atrium. The left ventricle is moderately dilated with mildly reduced systolic function.
Case Discussion
Normally, only the right atrium abuts the right lung, forming an interface with the right middle lobe. If the left atrium enlarges, extends towards and also abuts the right lung, a second interface between heart (the left atrium) and lung forms: this is the double density sign. The cardiac MRI showed that the left atrial enlargement was due to severe mitral regurgitation.
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