Lung 38mm*36mm is generally not called a nodule, but a mass. Lumps are more serious if they are caused by malignant tumors such as lung cancer; most are not serious if they are caused by benign diseases such as pneumonia. Lung masses may be caused by benign diseases such as pneumonia, tuberculosis, malignant tumors such as malignant tumors such as bronchopulmonary cancer and metastatic lung cancer. Generally a lung mass of 38mm*36mm size has a higher risk of malignancy, with a malignancy rate of more than 75%. If the mass is caused by malignant tumor, it is more serious, and untimely treatment will lead to local spread of cancer foci, distant metastasis, and even life-threatening. If the mass is caused by benign disease, most of them are not serious, and can be improved or cured by taking medication such as ceftriaxone, isoniazid or surgical treatment, only a small number of patients with severe pneumonia and tuberculosis may have serious condition. It is recommended that the patient consult a doctor for a comprehensive analysis of the possible causes of the disease, taking into account the morphology and density of the mass, and following the doctor’s instructions for treatment, and the use of medication under the guidance of the doctor.