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许多病变在纵隔内可产生肿块阴影。胸部X线检查在纵隔内发现肿块不一定是原发性纵隔肿瘤,在诊断时应注意以下问题。一、肿块的部位中心型肺癌可在纵隔处产生肿块,而与纵隔内肿块甚易混淆。肺癌早期即有咳嗽及咯血,痰中较易找到癌细胞,支气管检查很易见到癌肿,因此与纵隔肿块鉴别并不困难。中心型肺癌或紧贴纵隔的肺部良性肿瘤,与纵隔肿块尚有以下的X线区别点。(1)纵隔肿块直径的大部在纵隔内,肺内肿块直径的大部在肺内。(2)纵隔肿块与纵隔紧贴的上下缘与纵隔成钝角,肺内肿块则与之成锐角。(3)纵隔肿块在侧位片上与肺段解剖不符。(4)透视时纵隔肿
Many lesions can produce mass shadows in the mediastinum. Chest X-ray examination of the mass found in the mediastinum is not necessarily a primary mediastinal tumor. The following issues should be noted in the diagnosis. First, the location of the mass Central lung cancer can produce a mass in the mediastinum, and it is easy to be confused with the mass in the mediastinum. In the early stage of lung cancer, there are cough and hemoptysis. It is easier to find cancer cells in sputum. It is easy to see cancer in bronchial examination. Therefore, it is not difficult to identify with mediastinal mass. Central lung cancer or benign lung tumors immediately adjacent to the mediastinum still have the following X-ray differences from mediastinal masses. (1) Most of the diameter of the mediastinal mass is in the mediastinum, and most of the diameter of the lung mass is in the lung. (2) The upper and lower edges of the mediastinum mass and the mediastinum are in an obtuse angle with the mediastinum, and the lung mass becomes an acute angle with it. (3) The mediastinal mass was not consistent with the anatomy of the lung segment on the lateral radiograph. (4) Mediastinal swollen vision