Tiny subpleural nodules are generally not dangerous and not life-threatening.
The size of the diameter and shape of the nodule are related to the degree of malignancy of the nodule. In general, the larger the nodule, the more likely it is to be malignant when accompanied by signs such as the burr sign and lobulation sign. Benign nodules are more likely when the diameter of the nodule is small. Subpleural microscopic nodules are most likely to be benign, and benign nodules usually do not affect survival and can be made smaller or disappear with treatment.
There may be no special treatment for old benign subpleural nodules, but when the nodule has no tendency to increase in size, it can also be left untreated for the time being, which is not dangerous and will not affect normal life, and only requires regular follow-up of chest CT to observe the changes of the nodule.