Fibrosing mediastinitis with bronchial artery hypervascularity is a rare cause of massive hemoptysis. Conventional therapies for massive hemoptysis include pulmonary or bronchial artery embolization, endobronchial tamponade, or lung resection. A patient with fibrosing mediastinitis presented with refractory massive hemoptysis associated with bronchial hypervascularity and was treated with external-beam radiotherapy (XRT). The application of XRT for massive hemoptysis in malignant and nonmalignant disease of the thorax is discussed.