Lymph nodes – function, anatomy, and cancer what can cause enlarged lymph nodes in the neck

Lymph nodes serve two major functions in the body. Swollen painful lymph nodes in neck but not sick They filter lymph and assist the immune system in building an immune response. Swollen cervical lymph nodes in neck causes Lymph is a clear fluid that comes from blood plasma that exits blood vessels at capillary beds.


Causes of swollen lymph nodes in neck and face This fluid becomes the interstitial fluid that surrounds cells. Enlarged neck lymph nodes in dogs Lymph vessels collect and direct interstitial fluid toward lymph nodes. Pictures of swollen lymph nodes in groin female Lymph nodes house lymphocytes which are immune system cells that originate from bone marrow stem cells. Causes of swollen lymph nodes in neck and armpit B-cells and T-cells are lymphocytes found in lymph nodes and lymph tissues. Swollen groin lymph nodes std When B-cell lymphocytes become activated due to the presence of a particular antigen, they create antibodies that are specific to that specific antigen. Enlarged lymph nodes in the neck armpits or groin The antigen is tagged as an intruder and labeled for destruction by other immune cells. What causes enlarged lymph nodes in abdomen T-cell lymphocytes are responsible for cell mediated immunity and participate in the destruction of pathogens as well. Pictures of enlarged lymph nodes in the neck Lymph nodes filter lymph of harmful pathogens such as bacteria and viruses. Enlarged lymph nodes in the neck causes The nodes also filter out cellular waste, dead cells, and cancerous cells.

The filtered lymph from all areas of the body is eventually returned to the blood through a blood vessel near the heart. Causes of inflamed lymph nodes in neck Returning this fluid to the blood prevents edema or the excess accumulation of fluid around tissues. What can cause enlarged lymph nodes in the neck In cases of infection, lymph nodes release lymphocytes into the blood stream to aid in the identification and destruction of pathogens. What causes enlarged lymph nodes in the groin Lymph Node Structure

Lymph nodes are situated deep within tissues and also in superficial clusters that drain specific areas of the body. Pictures of swollen lymph nodes in neck hiv Large clusters of lymph nodes located near the surface of the skin are found in the inguinal (groin) area, axillary (arm pit) area, and cervical (neck) area of the body. Multiple enlarged lymph nodes in abdomen Lymph nodes appear to be oval or bean-shaped and are surrounded by connective tissue. What can cause swollen lymph nodes in the neck This thick tissue forms the capsule or outer covering of the node. Pictures of swollen lymph nodes under jaw Internally, the node is divided into compartments called nodules. Can chlamydia cause swollen lymph nodes in the neck The nodules are where B-cell and T-cell lymphocytes are stored. Enlarged groin lymph nodes ovarian cancer Other infection fighting white blood cells called macrophages are stored in a central area of the node called the medulla. Can swollen lymph nodes cause jaw pain Enlarged lymph nodes are a sign of infection as B-cell and T-cell lymphocytes multiply in order to ward off infectious agents. Groin swollen lymph nodes Entering the larger curved outer area of the node are afferent lymphatic vessels. Swollen occipital lymph node pictures These vessels direct lymph toward the lymph node. Enlarged lymph nodes in neck symptoms As the lymph enters the node, spaces or channels called sinuses collect and carry lymph toward an area called the hilum. Sore throat and swollen lymph nodes no fever The hilum is a concave area in a node that leads to an efferent lymphatic vessel. Several swollen lymph nodes in neck Efferent lymphatic vessels take lymph away from the lymph node. Sore throat and enlarged lymph nodes in neck The filtered lymph is returned to blood circulation via the cardiovascular system. Enlarged lymph nodes in groin male Swollen Lymph Nodes

Sometimes lymph nodes may become swollen and tender when the body is fighting an infection brought on by germs, such as bacteria and viruses. Painful enlarged lymph nodes in neck These enlarged nodes may appear as lumps under the skin. Swollen groin lymph nodes herpes In most cases, the swelling disappears when the infection is under control. What can cause enlarged lymph nodes in dogs Other less common factors that can cause lymph nodes to swell include immune disorders and cancer. Enlarged lymph nodes in groin and neck Cancer In Lymph Nodes

Lymphoma is the term used for cancer that begins in the lymphatic system. What are swollen lymph nodes a sign of This type of cancer originates in the lymphocytes that inhabit lymph nodes and lymph tissues. Reasons for enlarged lymph nodes Lymphomas are grouped into two main types: Hodgkin’s lymphoma and Non-Hodgkin lymphoma (NHL). Swollen inguinal lymph nodes male causes Hodgkin’s lymphoma can develop in lymph tissue which is found almost everywhere in the body. Multiple enlarged lymph nodes Abnormal B-cell lymphocytes can become cancerous and develop into several types of Hodgkin’s lymphomas. Enlarged lymph nodes in neck Most commonly, Hodgkin’s lymphoma starts in lymph nodes in the upper body regions and spreads through lymph vessels to lymph nodes in other areas of the body. Enlarged lymph nodes in neck and armpit These cancer cells can eventually enter the blood and spread to organs, such as the lungs and liver. Enlarged lymph nodes in armpit for 5 years There are several subtypes of Hodgkin’s lymphoma and all types are malignant. Swollen lymph node in neck one side for years Non-Hodgkin lymphoma is more common than Hodgkin’s lymphoma. Enlarged lymph nodes in neck treatment NHL can develop from cancerous B-cell or T-cell lymphocytes. Sore throat and swollen lymph nodes in armpit There are many more subtypes of NHL than Hodgkin’s lymphoma. Multiple enlarged lymph nodes in neck While the causes of lymphoma are not fully known, there are some risk factors for the possible development of the disease. Enlarged lymph nodes groin Some of these factors include advanced age, certain viral infections, acquiring conditions or diseases that compromise the immune system, toxic chemical exposure, and family history. Painless enlarged lymph nodes Source:

• SEER Training Modules, Lymphatic System. Treatment for swollen lymph nodes in neck U. Enlarged neck lymph nodes ultrasound S. Treatment for enlarged lymph nodes National Institutes of Health, National Cancer Institute. Pictures of swollen lymph nodes Accessed 29 May 2013 http://training.seer.cancer.gov/