Fibrosing mediastinitis with peripheral airway dilatation and central pulmonary artery occlusion.

We present a case of fibrosing mediastinitis causing peripheral airway abnormalities on CT consisting of bronchial dilatation and wall thickening due to longstanding central pulmonary artery obstruction. The peripheral airway dilatation is similar in appearance to that which has been described in patients with chronic pulmonary embolism.