pulmonary disorders
Mediastinal Masses
Etiology of Mediastinal Masses
In adults, themost commoncauses of mediastinal masses vary by location: Anterior mediastinum: Thymomas and Overview of Lymphoma (both Hodgkin and non-Hodgkin) Middle mediastinum: Lymph node enlargement and vascular masses Posterior mediastinum: Neurogenic tumors and esophageal abnormalities For other causes, see figure. Chronic fibrosing mediastinitis (eg, caused by tuberculosis, histoplasmosis) is a rare cause of mediastinal masses. In children, the most common mediastinal masses are neurogenic tumors and cysts. For other causes, see table. 