Ground glass shadows and ground glass nodules are different; the distribution of the two is different and the differences are diffuse and limited, respectively.
Ground-glass shadow is a diffuse ground-glass shadow that usually appears on images as a thin layer of opacity with indistinct borders and high density. It usually occurs in the early stages of lung disease, such as pneumonia, tuberculosis, and pulmonary edema.
Milled glass nodules are limited gross opacities and can be categorized as simple gross milled glass nodules or mixed milled glass nodules. Consider diseases such as focal hemorrhage, focal pulmonary fibrosis and lung adenocarcinoma. The malignancy rate of ground-glass nodules is higher than that of ground-glass opacities, so imaging of ground-glass nodules should be emphasized.
Patients are advised to undergo regular review, pay attention to their life management, and change their poor lifestyle and dietary habits.