What is the most likely diagnosis?
- 62 year-old with cardiac arrhythmia
Axial CT scan of heart
- Left Atrial Myxoma
- Metastases
- Mitral Regurgitation
- Lipomatous Hypertrophy of the Interatrial Septum
- Asymmetric Septal Hypertrophy
Additional Image - Another axial CT scan of heart
Additional Images
Axial CT scan of heart
Answer:
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4. Lipomatous Hypertrophy of the Interatrial Septum
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Lipomatous Hypertrophy of the Interatrial Septum
General Considerations
- Less rare than originally thought
- Benign accumulation of unencapsulated collection of brown fat in interatrial septum
- Hyperplasia more than hypertrophy of fat cells
- Associated with older age and obesity
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