Tuberculous fibrosing mediastinitis: CT and MRI findings

Fibrosing mediastinitis is a rare entity usually caused by granulomatous di sease. Most cases develop as a complication of histoplasmosis. Mediastinal involvement caused by tuberculosis most often produces focally enlarged lym ph nodes, with diffuse mediastinal involvement a very unusual manifestation of disease. The authors describe a patient with extensive tuberculous fibr osing mediastinitis, in whom fibrotic masses produced compression of airway s and vascular structures with resultant parenchymal changes.