Visible lymph nodes often mean that the lymph nodes can be examined, sometimes in a normal state, and sometimes in a disease state. Lymph nodes are immune organs and are found in many parts of the body, such as behind the occiput, behind the ears, in the neck, on the collarbone, under the collarbone, in the armpits, in the groin, etc. Normally, lymph nodes are relatively small and cannot be palpated. If an ultrasound is done, it is possible to find lymph nodes. If the ultrasound describes that the lymph nodes are visible, it suggests that the lymph nodes are normal. In addition to visible lymph nodes, if they are also accompanied by enlarged lymph nodes, it suggests a disease that appears in the lymph nodes, and it is important to improve the examination and clarify the cause. If the lymph nodes are enlarged, the following tests, such as blood count and ultrasound, need to be perfected. If the condition requires, a lymph node biopsy can be done to be able to clarify the cause of the swollen lymph nodes, and then appropriate treatment can be given to address the cause.