Pathological results showing active cell proliferation mainly refer to cell proliferation, proliferation, rapid replication, high number, and relatively high proliferation index. Usually the cell proliferation index can be evaluated by immunohistochemical staining, such as Ki-67, PCNA and other indicators show that there are generally the following cases: First, if the pathological results show benign lesions, if the cells are proliferating actively, patients need to pay attention to close follow-up and regular review to prevent the possibility of disease recurrence or malignant change, but usually the possibility of malignant change in benign diseases is small, so there is no need to However, the possibility of malignant change in benign disease is usually small, so there is no need to worry too much. Secondly, if the pathological diagnosis shows that the lesion is malignant, if the tumor cells are actively proliferating, close attention should be paid to the possibility of tumor recurrence or metastasis. Thirdly, if the nucleated cells in bone marrow are more active, this is a normal physiological phenomenon.