The presence of dense shadows in the lungs is not necessarily a pathologic indication of calcification. The presence of dense shadows in the lungs, which are detected by imaging of both lungs, can be seen in other lung pathologies besides calcification, including bacterial pneumonia, such as inflammatory reactions in the lungs caused by infections with Staphylococcus aureus, Pneumococcus, Klebsiella, and Pseudomonas aeruginosa. It also includes fungal pneumonia caused by Aspergillus infections, all of which can present with dense, inflammatory shadow foci in the lungs. In addition to infectious factors, there are also some tumors in the lung, such as bronchopulmonary carcinoma, alveolar cell carcinoma, etc., which have high-density occupying shadows in the lungs, and in combination with infections, there are also obstructive pneumonias, which can also have inflammatory shadows.