Masses in the anterior portion of the mediastinum can include thymoma, lymphoma, and germ cell<unk> s including teratoma.  Lung cancer typically spreads to the lymph nodes in the mediastinum.
Anterior mediastinal compartment, also known as anterosuperior compartment, is anterior to the pericardium. Masses in this area is more likely to be malignant than those in other compartments Most common masses found here include thymomas, germ cell<unk> s, lymphomas, thyroid tissue, and parathyroid lesions.
Mediastinal tumor
Mediastinal hematoma
Mediastinitis
Tracheal deviation
Mediastinal lipomatosis
Trapped lung
Tracheal diverticulum
Lung mass