The probability of malignancy of a ground glass nodule needs to be determined by the size and characteristics of the nodule. The probability of malignancy is usually around 0.1% for pure ground glass nodules smaller than 5 mm, 30% for gross glass-like nodules 5-8 mm, and 50% for nodules over 8 mm. If there is a realistic component in a pure ground-glass nodule, or if there are signs such as short burr sign, blood vessel crossing sign, bronchial insufflation sign, vacuole sign, and pleural pulling sign around the nodule, malignant ground-glass nodules are considered to be highly probable. At the same time, ground-glass nodules can be seen in many lung diseases, such as adenomatous hyperplasia, interstitial pneumonitis, and alveolar protein deposition, which are not malignant tumors. Mere ground glass nodules can not determine whether it is benign or malignant, and the probability of malignancy can not be clear, you can go to the hospital for further pathological examination. It is recommended to go to the regular hospital to check whether the disease is malignant or benign status through further diagnosis. And should follow the doctor’s advice and active treatment, can effectively extend a certain survival rate.