The patient’s right lower lung nodule 1.3 centimeters slightly larger than two years ago, need to choose the treatment according to the patient’s specific situation, can be observation treatment, surgical treatment. 1. Lung nodule 1.3 cm, is a relatively large lung nodule, the patient does not have clinical symptoms, chest CT examination shows that the nodule surface is smooth, clear boundaries, the patient is not willing to surgery, you can consider observational treatment, regular review of chest CT can be, usually recommended every 3 to 6 months to review, to see changes in the diameter of the nodule and morphological changes. 2. If the patient’s lung nodule is 1.3 cm and obvious clinical symptoms appear, such as obvious chest tightness and shortness of breath, or if the border is not clear and lobar sign can be seen in the chest CT, it is necessary to consider surgical resection of the lung nodule, and send the pathological biopsy to the hospital after the operation, and conduct radiotherapy treatment if necessary. Patients usually have discomfort, it is recommended to go to the hospital in a timely manner, do not be careless, so as not to miss the best time for treatment.