[Angiography, the efficacious means of the differential diagnosis of unspecific lung diseases, particularly as to hilum and mediastinum of the lungs (author's transl)].

Between sternum and spinal column, pathological changes of the mediastinum and of the adjacent areas are being not to be detected in the roentgenogram. Roentgenologically they are only to be detected in the event that there have been produced either protrusions or dilatations of the mediastinal shadow. The diagnosis of diseases of vessels, lymphnodes, tumors and inflammations, respectively, is very difficult to be obtained by roentgenogram of the chest in one or several planes. Beside endoscopic methods (bronchoscopy, thoracoscopy, mediastinoscopy), the angiography deserves to be emphasised among the various intrathoracal diagnoses. The angiography has found ever widening application with the reliable representation of processes of the heart and vessels in community with the defining of protruding processes. The angiography is to be used not only with suspicion of aneurysm and anomalies of the thoracal aorta, but with aneurysms of the heart wall, tumors of the heart, central arteriovenous fistulae of pulmonary vessels and with anomalies about the pulmonary artery, the pulmonary vein and the vena cava, respectively. Dependent upon the particular pathological changes stated, as methods of examination, the cavography and pulmonary angiography, respectively, are being applied. The statement has been supplemented by illustrating pictures.