摘要: This Discussion includes those diseases and conditions which may produce abnormal shadows in adjacent to the mediastinum. Cardiac vascular lesions are not included except where they need be differentiated from other mediastinal masses. Those major roentgenological manifestations pulmonary parenchyma discussed briefly, if at all, since roentgen diagnosis is based more on changes than variations. As with regions of body, it possible classify various ways. The classification given below anatomical structures contained within mediastinum has advantage relative simplicity. Also essential differential determine, first division involved and, second, possible, structure or have rise abnormality question. Once this been accomplished, diagnostic pos...