Many friends in the line of ultrasound examination, ultrasound report is often found to suggest that there is an axillary lymph node enlargement, resulting in many women friends very nervous, and even blind use of antibiotics or even excision biopsy and other excessive treatment, now the common lymph node ultrasound surface is summarized below, I hope to bring some inspiration to the majority of women friends. I. Lymph node reactive hyperplasia This kind of lymph nodes in the ultrasound performance is multiple lymph nodes enlargement, clear envelope, uniform expansion of the skin, medulla, lymphatic gate in the center, CDFI is still “portal blood supply”. For acute lymphadenitis, the onset is rapid, the duration is short, the inflammatory symptoms are obvious, and the lymph node tenderness is obvious, so this kind of lymph node enlargement is easy to distinguish; for chronic lymphadenitis, the ultrasound presentation is uniform hypoechoic, the boundary is clear, no fusion phenomenon is seen, and the blood flow distribution becomes “portal blood supply”, without disorganized blood supply. Tuberculous lymphadenopathy: The lymph nodes are enlarged in size, round and round-like in shape, fused into irregular blocks between the lymph nodes, uneven echogenicity of the lymph nodes, calcification, and disappearance of the lymphatic portal structure when the lesion is severe. These lymph nodes show an increase in volume, round and round-like shape, and multiple, with an increase in the proportion of cortex and a loss of medullary echogenicity or a thin line. The portal position is obviously eccentric or disappeared, and the CDFI blood flow signal is rich, and the portal vessels are in the shape of thick trunk. V. Metastatic lymph node enlargement These lymph nodes are also the most concerned lymph nodes, especially for women with breast masses. These lymph nodes show enlarged lymph nodes with unclear peripheral envelope, fusion between lymph nodes, round and round-like or irregular shape, uneven hypoechoic or hyperechoic interior, and calcification, CDFI may have multiple blood supply or less blood supply, and disorganized blood supply. Specially, the longitudinal diameter of lymph nodes is basically equal to the length of transverse diameter, and the lymphatic portal structure disappears. The above is the ultrasound image characteristics of common axillary lymph node enlargement, and we hope it can bring some help to those who are still confused again.