- Self-limiting illness
- Often affects the lymph nodes in the right lower quadrant only
- Pathogens are thought multiply in mesenteric lymph nodes. On gross pathology, lymph nodes are enlarged and soft. On microscopy, there is non-specific hyperplasia and when suppurative, there is necrosis and pus.
Mesenteric adenitis has a number of causes:
variety of viruses
Yersinia enterocolitica (Europe, North America and Australia)
Treatment and prognosis
Self-limiting, and typically abates over the course of a few weeks.
Interestingly, when mesenteric adenitis (or appendicitis) occurs in childhood or adolescence, there is a significantly reduced risk of ulcerative colitis later in life.
The clinical differential includes:
lymph nodes are generally smaller and fewer
appendix is abnormal
Any #FOAMPed pearls or tips on mesenteric adenitis vs appendicitis? There's an apparent dearth of relevant FOAMEd! http://t.co/Skl5MUoM4U
— Charlotte Davies (@OneLongPlait) March 29, 2014