He Fei, Department of Respiratory Medicine, Hangzhou Red Cross Hospital, Hangzhou, China Reply: For this kind of nodular lesions, our main methods are: 1. bronchoscopy, which may be more painful to the patient, but it is more difficult to check the peripheral lesions. 2. CT-guided percutaneous lung puncture biopsy; 3. PET/CT examination: it can detect malignant tumors with the diameter of the lesion larger than 8mm, which is painless, but it is a self-paying item and more expensive. 4. .Regular CT review follow-up. Due to the small size of the picture, it is not possible to determine the examination method at present, so we suggest that the patient bring the case data to the respiratory department of a tertiary A-class hospital to determine the examination method. He Fei, Department of Respiratory Medicine, Hangzhou Red Cross Hospital