Different collections that may occur within the mediastinum
- • Fluid: mediastinal edema or pericardial effusion
- • Blood: mediastinal hematoma or hemopericardium
- • Pus: mediastinal abscess, pericardial abscess, or acute mediastinitis
- • Air: pneumomediastinum and pneumopericardium
- • Fat: mediastinal lipomatosis
- • Fibrosis: fibrosing mediastinitis
- • Cells: mediastinal tumor
