The need for surgery for lung nodules 5mm in size should be judged according to the situation, if it is benign it does not need surgery, if it is malignant it needs surgery.
Lung nodules 5mm generally speaking, benign lesions are more, you can check regularly to see the size of the nodule, morphology of the changes, if there is no enlargement, there is no lobar sign, burr sign, etc., you can not need to operate, regular follow-up can be.
If the nodule grows faster, and there are lobar signs and burr signs, you need to be alert to the possibility of malignancy, and then surgery is needed, and then pathologic examination to determine the nature of the nodule.
It is recommended to have regular medical checkups, observe the symptoms, and if any abnormality occurs, it is necessary to treat it under the guidance of the doctor, and follow the doctor’s instructions.