High-density shadow in the lungs is generally a term used in radiological imaging. When taking a radiograph, it is generally equivalent to flattening a person onto a piece of paper. At this time, if the body has a high density, a white image will appear, for example, muscles, bones, which have a high density, will appear white on the radiograph, and the lungs, which have a low density, will show some black shadows on the radiograph. If some white phenomenon appears in the lung, it means that there is a certain disease phenomenon in the lung, generally it may be a calcification point, it may be inflammation or tumor, tuberculosis is possible, for the lung appears some high-density shadow, but also to go to the hospital examination, including enhanced CT or fiber bronchoscopy to further confirm the diagnosis, to achieve early detection, early treatment.