Overview
Mesenteric lymphadenitis, also known as mesenteric adenitis, is inflammation (swelling) of the lymph nodes in the abdomen (belly). Lymph nodes are organs that are part of your body’s immune system. They filter harmful substances such as bacteria and viruses so that they don’t spread to other parts of your body. Lymph nodes are about the size of a pea, but they can get larger and become tender when inflamed.
The word “mesenteric” refers to inflammation occurring in the mesentery, which is a fold of membrane that attaches your bowel to the wall of your abdomen.
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