PMC3747420_01
Axial CT image with intravenous contrast, showing the interatrial septal lipoma (encapsulated).
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fig1
The mass measured 3 x 5 cm and had a Hounsfield number of -100, consistent with fat (Figure 1).
A second axial image, more cephalad, shows the septal lipoma, compressing the superior vena cava.
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fig2
The lumen of the SVC was significantly narrowed (Figures 2, 3, and 4), as shown on the CT scan by the anterior displacement of contrast material caused by extraluminal compression.
Coronal reconstruction, showing the entire length of the superior vena cava, that is, from the right and left brachiocephalic veins down to the right atrium. Compression by the septal lipoma is seen, at the point where the SVC enters the atrium.
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fig3
The lumen of the SVC was significantly narrowed (Figures 2, 3, and 4), as shown on the CT scan by the anterior displacement of contrast material caused by extraluminal compression.
Coronal CT reconstruction shows how the superior vena cava tapers distally, as it is compressed by the lipoma.
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fig4
The lumen of the SVC was significantly narrowed (Figures 2, 3, and 4), as shown on the CT scan by the anterior displacement of contrast material caused by extraluminal compression.