Usually if imaging shows the presence of high-density shadowing, there are several possibilities: 1, fibrous connective tissue hyperplasia, in the case of connective tissue hyperplasia, there will be a mass of high-density shadowing hyperplasia inside, and the wrapping is carried out, and there are striated shadows and high-density imaging. 2, if for the lungs there is high-density shadowing, usually the formation of small nodules or micronodules in the lungs, this condition The greatest likelihood is that the mass is inflammatory. In the case of inflammatory masses, a high-density shadow may be seen because of the infiltration of granulocytes, monocytes, macrophages and other cells around the inflammation. 3. High-density shadows are also most likely to be tuberculosis masses, especially in the lungs if there is a high-density tuberculosis-like mass, which usually indicates active tuberculosis. Finally, high-density shadow may also be a case of cancer, but the likelihood of cancer is relatively low.