Mediastinal lymph node calcification is usually caused by some diseases of the lungs. Mediastinal lymph nodes are located in the mediastinum of the body, and if they are enlarged, it is usually caused by inflammatory or neoplastic diseases of the lungs, esophagus, and other parts of the body. Usually malignant tumors in the lungs or malignant tumors in the esophagus are less likely to cause lymph node calcification, but if the mediastinal lymph nodes are enlarged due to inflammation in the lungs or inflammation in the esophagus, it may lead to calcified foci in the integrated lymph nodes after healing, and usually calcified foci in the mediastinal lymph nodes do not require treatment and do not cause any harm to the body. In summary, it can be seen that calcified foci are not diseases per se, but traces left after the inflammatory disease has healed, somewhat similar to scars on the surface of the body, and this condition does not require special treatment.