Mesenteric lymph node

Mesenteric lymph nodes are a group of lymph nodes located in the mesentery of the abdomen. They play a crucial role in the immune system, helping to filter out harmful substances and produce white blood cells to fight infection.

Anatomy[edit | edit source]

The mesenteric lymph nodes are located in the mesentery, a fold of tissue that attaches the intestines to the back wall of the abdomen. They are typically grouped into three main clusters: the superior mesenteric lymph nodes, the inferior mesenteric lymph nodes, and the ileocolic lymph nodes.

Function[edit | edit source]

The primary function of the mesenteric lymph nodes is to filter lymph, a clear fluid that circulates through the lymphatic system carrying cells that help fight infection and disease. They also produce white blood cells known as lymphocytes, which play a key role in the body's immune response.

Clinical significance[edit | edit source]

Inflammation of the mesenteric lymph nodes, known as mesenteric lymphadenitis, is a common cause of abdominal pain, particularly in children. It is usually caused by an infection, such as a bacterial infection or viral infection, that has spread to the lymph nodes from the intestines.

Mesenteric lymph nodes can also be affected by various diseases and conditions, such as cancer, lymphoma, and autoimmune diseases. In particular, they are often involved in the spread of colorectal cancer, as the cancer cells can travel through the lymphatic system and establish secondary tumors in the lymph nodes.