The micronodules examined usually show the size, for example, micronodules in the lungs, CT can report 2-3mm nodules, if there is any discomfort, it is recommended to go to the hospital as early as possible for clear diagnosis and treatment. The vast majority of lung micronodules are benign nodules, mostly caused by infection, tuberculosis, benign tumors, etc., and a very small portion of them are carcinoma in situ. Generally speaking, most of the micronodules do not need any special treatment and require regular review. If the lesion increases rapidly, early surgical treatment is needed to remove the lesion. If micronodules are detected, it is recommended to go to the hospital for timely consultation, clear diagnosis and treatment, so as not to delay the condition and lead to adverse consequences.