List eight differential diagnoses for a cardiophrenic angle mass.

1. Epicardial fat pad for a cardiophrenic angle mass
2. Pericardial cyst
3. Lymph node
4. Anterior mediastinal mass
5. Left ventricular aneurysm (left) or aortic aneurysm (right)
6. Adjacent lung or pleural tumor
7. Dilated right atrium
8. Diaphragmatic (Morgagni) hernia