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DIFFUSE MEDIASTINAL WIDENING ON CXR |
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SVC obstruction: |
mediastinal / lung tumours chronic inflammatory mediastinitis mediastinal fibrosis (usually idiopathic) |
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extensive tumour: |
metastases lymphoma |
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other: |
cardiac tamponade tricuspid stenosis leaking aortic aneurysm dissecting aortic aneurysm |
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