Guo Xinmei, Department of Tuberculosis, Shandong Chest Hospital: Tuberculosis is a respiratory infectious disease, mainly spread by air and droplets. An open tuberculosis patient will discharge tuberculosis bacteria into the air when talking loudly, coughing or sneezing, and is especially susceptible to infection in close contact within two meters, and can infect 14 people a year. However, if there are no lesions in the lungs and no obvious symptoms of coughing and sputum, in principle, simple tuberculous pleurisy (including tuberculous abscess chest) is not infectious. Guo Xinmei, Department of Internal Medicine of Tuberculosis, Shandong Chest Hospital: The surgeon said that tuberculosis may become cancerous after a long time, will it? Guo Xinmei, Department of Tuberculosis, Shandong Chest Hospital: Some tuberculosis lesions will remain calcified nodules after cure, although this is one of the manifestations of tuberculosis cure, but it is after all a foreign body to the normal lung tissue.