The mediastinum is a non-delineated group of structures in the thorax (chest), surrounded by loose connective tissue. It is the central compartment of the thoracic cavity. It contains the heart, the great vessels of the heart, esophagus, trachea, thymus, and lymph nodes of the central chest. A wide variety of diseases involving these organs can present as a<unk> <unk>  or widening of the mediastinum on imaging studies.
Mediastinal mass causes
Lung abscess causes
Mediastinitis causes
Mediastinal mass differential diagnosis
Pneumomediastinum differential diagnosis
Lung mass pathophysiology
Bronchiectasis causes
Tracheitis pathophysiology