Spots on the lungs can be cancerous lesions, but spots on the lungs may also be seen in people with pneumonia, tuberculosis, pneumoconiosis, long-term smokers, etc. Spots on the lungs generally refer to the presence of denser lesions in the lungs on imaging, which may be cancerous lesions, but may also be seen in people with pneumonia, tuberculosis, pneumoconiosis, long-term smokers, and others. For gradually increasing small speckled shadows with progressively higher density and changes such as burr sign and lobulation at the edges, the possibility of cancerous lesions needs to be considered. Patients with spots on the lungs are recommended to go to the hospital in time, clarify the cause of the disease and follow the doctor’s instructions for treatment.