Calcified lung nodule 8mm is usually not serious, most of them are benign, but in rare cases, they may worsen. In general, calcified lung nodules are “scars” formed after inflammation of lung parenchyma cells, and the causes of this symptom are mostly inflammation, tuberculosis, etc. Therefore, most of the calcified lung nodules are benign, which only represent the lesions of the lungs at one time, and generally have no adverse effects on the body, so there is no need to be overly concerned about them, and treatment is usually not necessary. However, calcified lung nodules may deteriorate in rare cases, and a small number of people will develop scarring cancer on the basis of old lesions such as calcification in the lungs. Those who suffer from scarring cancer are usually older men, such as those with a long history of heavy smoking, mine workers, workers in special jobs, and those with a family history of lung cancer tumors are among the high-risk groups of scarring cancer, and this group of people need to undergo regular review of CT of the chest for early detection of the lesions. Patients with calcified nodules 8mm in the lungs are advised to go to the hospital for clarification of their condition, especially those in the above high-risk groups.