![]() ![]() They also feel soft and are easy to move. Normal lymph nodes are generally less than 1/2 inch (12 mm) across. Usually, they are the same size on both sides of the body. Normal lymph nodes are found in the neck, armpit, and groin. The shape index is a good indicator for distinguishing benign and malignant lymph nodes, but it is not always accurate. Some scholars have proposed a "shape index" to describe the shape of lymph nodes, that is, the ratio of the short axis to the long axis of the lymph node. Malignant lymph nodes lose their normal shape and are often round. Reactive hyperplastic lymph nodes have diffuse hyperplasia and cortical widening but maintain normal morphology. Normal lymph nodes are oval or kidney-shaped. There is no uniform standard for the threshold for differentiating benign and malignant lymph nodes. The size of cervical lymph nodes varies by location and gender, and lymph nodes in the upper neck, including the submandibular and level II, are larger than other locations. Under normal physiological conditions, lymph nodes maintain a relatively stable size and structure however, under pathological conditions (e.g., infection, inflammation, and tumor). They are also one of the main ways of tumor metastasis.Īlthough lymph nodes are inherently developed, their morphology and structure are highly plastic. They are important places for monitoring abnormal changes in the body, such as pathogen invasion, filtering and removing pathogenic microorganisms, and inducing antigen-specific immune responses. Lymph nodes are one of the main lymphoid organs in the body and are located almost everywhere. There are about 800 lymph nodes in the human body, like large and small safety fortresses. Externally, it resists the invasion of viruses and bacteria internally, it monitors the canceration of cells in the body. ![]() Specifically, it is responsible for two tasks. Lymphocytes are the smallest white blood cells in the human body. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |