Posterior mediastinal lesion

A mediastinal tumor is a tumor in the mediastinum, the cavity that separates the lungs from the rest of the chest. It contains the heart, esophagus, trachea, thymus, and aorta. [Source: Wikipedia ]

May Be Caused by

Common: Aneurysmal bone cyst; Aortic dissection; Descending aorta aneurysm; Ewing sarcoma; Giant cell tumor; Hemangioma; Neurogenic neoplasm; Osteosarcoma; Paraspinal abscess; Spinal metastasis; Spinal osteomyelitis; Spinal tuberculosis; Spine fracture; Suppurative spondylitis
Uncommon: Acute mediastinitis; Bochdalek hernia; Castleman disease; Chemodectoma; Duplication cyst; Extension of retroperitoneal mass; Extralobar pulmonary sequestration; Extramedullary hematopoiesis; Fibroma; Fibrosing mediastinitis; Glomus tumor; Hydatid cyst; Intrathoracic goiter; Intrathoracic thyroid tumor; Leiomyoma; Lipoma; Loculated hemothorax; Loculated pleural effusion; Lymphadenopathy; Lymphoma; Mediastinal abscess; Mediastinal hematoma; Mediastinal varices; Meningocele; Meningomyelocele; Mesothelioma; Metastasis; Metastatic bronchogenic carcinoma; Pancreatic pseudocyst; Paraganglioma; Paraspinal hematoma; Pheochromocytoma; Plasmacytoma; Pleural empyema; Pleural thickening; Sarcoidosis; Sarcoma; Teratoma; Thoracic duct cyst; Thoracic duct neoplasm; Thoracic kidney; Thymoma; Traumatic hernia; Tuberculosis