Lymph node fusion is when multiple enlarged lymph nodes adhere together to form a swelling. Lymph nodes are immune organs, under normal circumstances, lymph nodes will not increase in size, if the lymph nodes have diseases, such as lymph node metastases, lymph node tuberculosis, etc., lymph nodes will increase in size, and there may be multiple lymph nodes increase in size, if the enlarged lymph nodes are adhered and gathered together, a larger localized mass will be formed, which is called lymph node fusion. After the occurrence of lymph node fusion, it is necessary to further improve the relevant examinations, including blood routine, tumor markers, CT, etc., combined with the palpation of the lymph nodes, usually be able to clarify the cause, and then you can carry out the appropriate treatment for the cause of the disease, so as to avoid delaying the condition.