Lymph node enlargement, blood flow signals, cancer?

If

cancer cells are found locally by pathological examination, it may be related to cancer. Because cancer cells stimulate lymph nodes, causing local tissue swelling and increasing blood flow in lymph nodes, blood flow signals may be found during imaging examination. However, if cancer cells are not found in the affected area by the above examination, it may be caused by inflammation. Inflammatory substances can irritate lymph nodes, causing local damage, causing swelling, and blood flow signals can be found on imaging.