User:Mr. Ibrahem/Mesenteric adenitis

Mesenteric adenitis is inflammation of the mesenteric lymph nodes in the abdomen. Symptoms may include sudden onset of right lower quadrant abdominal pain, fever, and vomiting. Complications can occasionally include intussusception.

The cause is often unclear; though may occur secondary to infections or inflammatory bowel disease. Infections involved may include Epstein-Barr virus and Yersinia enterocolitica among others. Often it occurs after an upper respiratory infection or gastroenteritis. Diagnosis may be supported by ultrasound or CT scan, after ruling out other possible causes. Other conditions that appear similar include appendicitis.

No specific treatment is required, though intravenous fluids or NSAIDs may help with the symptoms. Recover may require a few weeks. It is relatively common, occurring most commonly in children or young adults. One trial found that nearly 20% of cases that appeared to be appendicitis were in fact mesenteric adenitis. The condition was first classified in 1926.