Foci of calcification in the lungs are generally characteristic of benign lung lesions, usually associated with inflammation of the lungs, and most often appear after spontaneous healing of tuberculosis, and are not necessarily a precursor to lung cancer. Calcified foci in the lungs are a common diagnosis on chest radiographs or chest CT and are the equivalent of “scars” after the lungs have healed – foci of calcification that occur after a lung lesion has healed and if the inflammation is not fully absorbed, this can lead to calcium deposits. Foci of calcification often indicate that the area has healed and usually do not require special treatment. In addition to inflammation, calcified foci in the lungs can be seen in a variety of diseases such as tracheobronchitis, pneumonia, hyperparathyroidism, and abnormalities of calcium and phosphorus metabolism in the body. Benign tumors of the lung, such as lung malignancies, can also cause calcifications, which can be surgically removed; teratomas can also cause calcified foci, but the percentage is very small and mostly benign. Of course, patients with lung cancer can also develop calcified foci, but lung cancer is not the primary cause in all cases of calcified foci. Therefore, for calcified foci in the lung, it is sufficient for the patient to have regular follow-up examinations, as it only represents a former lesion. The calcified foci themselves do not significantly affect the patient’s health, and there is no need to treat them specifically.