If there is no tumor, it is benign inflammation, and lung nodules increase, indicating that new infection lesions have appeared. There are new infections, and it is necessary to distinguish between benign and malignant. If it is a malignant nodule, enlargement may be metastasis. If it is initially inflammatory infection or tiny nodules, most of the increase is due to the problem of newly infected lesions.
The increase of pulmonary nodules refers to the increase of nodules found during imaging observation and follow-up review.