Not having pneumonia or tuberculosis but having lung nodules may be caused by infection with tuberculosis bacteria, but one’s own resistance is strong and it heals on its own without the onset of the disease, or it may be caused by smoking or environmental factors, tuberculosis or lung tumors, and so on.
Lung nodules usually form as a result of inflammation of the lungs caused by infections such as bacteria and viruses. After the inflammation is controlled, the inflammatory response may linger to form nodules. Therefore, having lung nodules without having had tuberculosis may be due to abnormal chest radiographs caused by infection with tuberculosis bacteria, but with strong self-resistance and self-healing without the onset of disease, without clinical symptoms.
In addition, long-term smoking, long time in the environment containing dust or haze, or the lungs appear misshapen tumors, sclerosing hemangiomas and malignant tumors, etc., or the patient suffers from tuberculosis or connective tissue disease, may make the lungs appear nodules.
If lung nodules are detected on examination, the patient should seek prompt medical attention for further examination and clarification of the nature of the lung nodules under the guidance of a specialized physician for treatment.