Bilateral enlarged lymph nodes with abundant blood flow signals may be caused by inflammation, blood diseases, lymphoma, etc. 1. Inflammation: When the lymph nodes are inflamed due to local inflammation in the soft tissues, the blood vessels in the lymph nodes are usually filled up, resulting in the presence of blood flow signals. 2. Blood diseases: If the patient suffers from other blood diseases such as leukemia, the leukemia cells in the body will multiply and accumulate in the bone marrow, and when infiltrating into the lymph nodes, it may cause enlargement of the lymph nodes and the appearance of blood flow signals. 3. Lymphoma: If the patient suffers from lymphoma, the tumor location may appear metastasis, causing lymph node enlargement and blood flow signals, and it is recommended that the patient go to the hospital for lymph node pathology or magnetic resonance examination to determine the condition. When this condition occurs, it is recommended that patients go to the hospital in time to improve the relevant examination, determine the cause of the disease, and reasonably standardize the treatment.