Have you or your child been experiencing lots of stomach pain and tenderness after a viral or bacterial infection? If so, you may be dealing with mesenteric adenitis, which is the swelling of the lymph nodes in the abdomen. What causes it, though? Find out from our AFC Urgent Care Knoxville team below. What Causes Mesenteric Adenitis? The most common cause is a viral or bacterial infection in the intestines. When an infection in the ...