Calcified foci in the upper lobe of the left lung are relatively mild, and are usually associated with tuberculosis, past medical history, etc.
1. Tuberculosis is a typical disease that can cause calcified foci in the lungs. After Mycobacterium tuberculosis infects the lung tissues, due to the inflammatory reaction, it damages the lung tissues and forms fibrous hyperplasia, and the local foci can not be completely absorbed after recovery, and then calcified tissues are formed in the lungs.
2. Past medical history, past history of lung infections, etc., can also cause damage to the local tissues of the lungs, resulting in scar tissue in the lungs, which can be manifested as a high density shadow called calcified foci during lung imaging.
The presence of calcified foci in the upper lobe of the left lung is recommended to consult a doctor for timely examination and treatment according to the doctor’s advice.