Several nodules in both lungs, low-risk means that multiple nodular lesions are found in both lungs through imaging, but the possibility of malignant lesions in the nodules is relatively small, and it is generally considered to be caused by tuberculosis, pneumonic nodules, benign tumors of the lungs and other lesions. 1. Tuberculosis: Tuberculosis is a lung disease caused by Mycobacterium tuberculosis infection, which is one of the causes of multiple nodules in the lungs, and is an infectious lesion of the lungs with a low degree of malignancy. 2. Pneumonic nodules: nodules left over from previous lung infections that have not been cured, or lung nodules formed by inhaling too much dust, air pollution and other long-term stimulation by foreign bodies. 3. Benign lung tumors: lung malformation, hemangioma, papilloma and other benign tumors occurring in the lungs are also benign lesions causing multiple nodules in both lungs. Several nodules in both lungs, low-risk may also be caused by other reasons, please consult the hospital in time to find out the cause of the disease as soon as possible, and follow the doctor’s instructions for treatment or regular follow-up.