肺野交界性肿块阴影指发生在交界部位且有块状影像的病变(肺与纵隔,肺与胸壁,肺与横膈等交界部位)。胸部具有良好的天然对比,是全身最适合X线检查的部位。X线发现的此类肿块,可能是肺内也可以是肺外肿块,极易误诊,现将其鉴别诊断综述如下。1病变定位1.1肺与纵隔交界处肿块:①肺 Pulmonary borderline mass shadow refers to the junction occurred in the block image and the lesion (lung and mediastinum, lung and chest wall, lung and diaphragm at the junction). Chest has a good natural contrast, the body is the most suitable X-ray examination of the site. X-ray findings of such lumps, lungs may also be outside the lung mass, easily misdiagnosed, now its differential diagnosis are summarized below. Location of a lesion 1.1 lung and mediastinal junction mass: ① lung