Lung gross glass nodule 9 mm is not necessarily lung cancer. Lung hairy glass nodules are also called ground-glass nodules. 9mm ground-glass nodules can be caused by pulmonary hemorrhage, limited pneumonia, peripheral lung cancer, etc. 1.
1. Pulmonary hemorrhage: due to bleeding from pulmonary artery, pulmonary vein, alveoli, resulting in dyspnea, hemoptysis, etc. CT will show large hyperdense shadow or ground glass nodule.
2. peripheral lung cancer: manifested by chest pain, hemoptysis, bloody sputum, dyspnea, etc. CT shows nodular shadows below 2cm, which are round or irregular in shape, and the density can be solid nodules, partially solid nodules and ground glass nodules, etc. There are burr signs or pleural hollows. The density can be solid nodules, partially solid nodules and ground glass nodules, etc. There is a burr sign or pleural depression sign.
3. Restricted pneumonitis: it is often caused by streptococcal infection, with cough and fever as the main symptoms, and when solid changes occur in the lungs, it can be manifested as ground-glass nodules.
Ground-glass nodules with a diameter of less than 5mm are usually benign, and the larger the diameter, the greater the possibility of malignancy, and should be examined as soon as possible to determine the cause of the disease, so as not to delay the condition.