Condition analysis: Lung nodules generally persist once they occur, and can be eliminated unless treated. Lung nodules that are benign and usually persist and do not grow or grow very slowly, and do not require medication or other treatments. If it is a malignant nodule, it grows relatively quickly, and its volume can be doubled in about 20 days, and this nodule can be eliminated by surgical resection or radiotherapy and chemotherapy, but it may recur in a few years. Borderline nodules may grow slowly at first, grow quickly once they become malignant, require surgery to eliminate, and may recur.