Pulmonary ground glass nodules may be malignant or benign. They are common in acute focal pneumonia, pulmonary hemorrhage, limited pulmonary fibrosis and peripheral lung cancer.
1. Acute focal pneumonia: acute inflammation of the lungs caused by bacterial infection, etc. It is mainly carried out in limited areas of lung tissue. When alveolar solidification is present on CT, it can show the visualization of ground glass nodules, which are benign lesions.
2. Lung hemorrhage: when a small amount of hemorrhage, it is manifested as increased density of alveolar shadows as well as ground glass shadows in the center of lobules. When there is a large amount of hemorrhage, it is a fusion lesion of lobules and lobules. The center of the fusion lesion is more dense. It is a benign lesion.
3. Restricted pulmonary fibrosis: diffuse fibrous alveolitis, in early stage, lobular slightly high-density shadow can be seen in the posterior and posterior basal segments of the two lower lungs, and air-containing bronchial shadows can be seen in them, which is a benign lesion of the stomach.
4. Peripheral lung cancer: it is the most common primary malignant tumor in the lungs, which can be presented as rounded or irregularly shaped ground-glass nodules. Ground-glass nodules are mostly seen in lung adenocarcinomas that mainly grow against the wall, and nodules with a diameter of less than 5mm are mostly benign.
Whether it is benign or malignant needs to be examined in the hospital, and the diagnosis should be made by combining clinical symptoms and pathological findings.