A 1.6-cm ground-glass nodule in the right lung apex is large and should be taken seriously, and it is recommended to go to the hospital for further examination and treatment accordingly. A ground-glass nodule is a nodule that is denser than the lung parenchyma but less dense than a solid lesion. If the border of the nodule is blurred and accompanied by signs such as burr sign and pleural depression sign, it is more likely to be malignant. Further examination and, if necessary, biopsy should be performed. If it is a tumor, surgical removal is required as soon as possible to prevent spreading. If the nodule is clear, regular in shape and has no malignant signs, it is more likely to be benign. Ask about the patient’s medical history. If the patient has had tuberculosis before, it is necessary to suspect whether it is old tuberculosis. Enhanced CT scan is recommended, and if no enhancement occurs, old tuberculosis is likely. The right upper lung ground-glass nodule 1.6cm should be taken seriously, further examination should be carried out in time, and the corresponding treatment should be carried out in time after the diagnosis is clear to avoid delaying the treatment.