Calcified nodules are nodular lesions in certain parts of the body or tissues, where necrosis occurs inside the nodule due to some factors, in which calcium salts are deposited then calcification is formed and calcified nodules are formed. Most calcified nodules are the result of a partially destructive disease of the lungs, such as tuberculosis, pneumonia, etc. In particular, it is not possible to re-repair the tissue that has been destroyed, and therefore calcified nodules are formed at the location of the lesion in the form of calcium salt deposits. Calcified nodules are usually detected by chest X-rays, CT scan, etc. Most of the calcified nodules are benign, the most common being those caused by tuberculosis, which usually do not require special treatment and do not have a significant impact on the human body. When calcified nodules appear, it is recommended to go to the hospital for a complete examination to clarify the location, size and boundary of the calcified nodules, and then decide whether or not to take treatment after comprehensive consideration.