Adenitis's a general term for an inflammation of a gland or lymph node. Classification Cervical adenitis's an inflammation of a lymph node in the neck. Lymph adenitis's caused by bacterial infection in lymph nodes. The infected lymph nodes become enlarged, warm and tender. A swelling of lymph nodes due to growth of lymph cells's called lymphadenopathy. Mesenteric adenitis's an inflammation of the mesenteric lymph nodes in the abdomen. If it occurs in the right lower quadrant, it can be mistaken… (More on Adenitis)