Partially solid ground-glass nodules are nodules with both solid and ground-glass components, and partially solid ground-glass nodules have a higher risk of malignancy. Lung nodules are lung masses less than or equal to 3 cm in size detected by chest CT or other imaging examinations, and can be categorized into solid nodules, pure ground-glass nodules, and partially solid ground-glass nodules according to their density. The ground-glass component generally shows a cloudy slightly dense shadow, and the solid component shows a uniform density shadow. A partially solid ground-glass nodule is one that has both a solid and a ground-glass component, also known as a mixed nodule. Partial solid ground-glass nodules may be caused by malignant tumors such as bronchopulmonary carcinoma and metastatic carcinoma, or by benign diseases such as pneumonia, misshapen tumors, and sarcoidosis. Some solid ground-glass nodules have a higher risk of malignancy, with about a 65% risk of malignancy. The malignant risk is generally higher for larger nodules with a high proportion of solid components and with signs such as lobulation and burring. Patients are advised to visit a regular hospital for further evaluation based on other features such as size and shape of the nodule, and undergo examination and treatment as prescribed by the doctor.