A 2mm micronodule in the right lung is a dense 2mm diameter shadow that may be seen on the right side of the lung tissue on a CT image of the chest. In general, most of the 2mm micronodules in the right lung may belong to benign diseases, which are usually seen in inflammation, tuberculosis, and allergic diseases. However, there is a possibility of malignancy in a few cases, so patients need to be reviewed regularly. If at the time of follow-up review chest CT suggests that the nodule has a tendency to enlarge focally, with signs such as lobulation, burr, and pleural pulling, the patient will need to go to the hospital for puncture biopsy or undergo surgical thoracoscopic surgery to remove the nodule, as appropriate. If there is no obvious malignant change, follow-up observation can be continued. To summarize, patients are advised to have further examination in time, if there are no obvious symptoms, they can be left untreated for the time being, but patients must follow the doctor’s instructions to go to the hospital for regular review.