# Mesenteric adenitis - Category: acute - Review status: reviewed (every claim checked against a document named on this page) - Sources: Mesenteric Adenitis - StatPearls (NCBI Bookshelf NBK560822) - https://www.ncbi.nlm.nih.gov/books/NBK560822/ · Mesenteric adenitis - disease-level clinical article (mesenteric-adenitis-full.txt) · Mesenteric adenitis - disease-level clinical article (mesenteric-adenitis-clinical.txt) · MSF Essential Drugs 2024 (ibuprofen oral monograph) - Verified date: 2026-08 ## Verified against - Mesenteric Adenitis - StatPearls (NCBI Bookshelf NBK560822) - https://www.ncbi.nlm.nih.gov/books/NBK560822/ - Mesenteric adenitis - disease-level clinical article (mesenteric-adenitis-full.txt) - Mesenteric adenitis - disease-level clinical article (mesenteric-adenitis-clinical.txt) - MSF Essential Drugs 2024 (ibuprofen oral monograph) ## Treatment metadata - Ibuprofen — 400 mg — oral.liquid - Referral & safety-netting (no drug therapy) ## Complete treatment card ```text MESENTERIC ADENITIS Sources: Mesenteric Adenitis - StatPearls (NCBI Bookshelf NBK560822) - https://www.ncbi.nlm.nih.gov/books/NBK560822/ · Mesenteric adenitis - disease-level clinical article (mesenteric-adenitis-full.txt) · Mesenteric adenitis - disease-level clinical article (mesenteric-adenitis-clinical.txt) · MSF Essential Drugs 2024 (ibuprofen oral monograph) Review status: REVIEWED against 4 sources listed above (2026-08) IS IT THIS? - reference only, to read alongside your own examination SYMPTOMS - what the patient reports (3) - Sudden right lower quadrant pain in a child under 10 favours mesenteric adenitis over appendicitis [abdominal pain · right lower quadrant pain] - It often follows a recent bout of gastroenteritis or an upper respiratory infection - Fever, vomiting, altered bowel habits, and periumbilical or right lower quadrant pain are typical [abdominal pain · fever · right lower quadrant pain · vomiting] SIGNS - what you find (1) - Tenderness on palpation is noticeably milder than in acute appendicitis TESTS (7) - CBC and CRP are usually raised, but a normal result does not exclude the diagnosis - Urinalysis is mainly done to exclude a urinary tract infection - Blood tests cannot reliably tell appendicitis, intussusception, and mesenteric adenitis apart - Abdominal ultrasound is the reference test, diagnostic when it shows enlarged, low-echo nodes without a thickened, blind-ending appendix - A lymph node at least 8 mm across its short axis meets the current radiologic definition - In appendicitis the enlarged nodes tend to be fewer and smaller than in mesenteric adenitis - Adding superb microvascular Doppler imaging to ultrasound raised sensitivity from about 63% to 81.5% in one study IF NOT THIS - what else fits (3) - Appendicitis and intussusception are the leading differentials for similar pain in this age group - Gynaecologic and urologic causes considered include ovarian cyst rupture or torsion, ectopic pregnancy, testicular torsion, and epididymitis - Other differentials include mesenteric ischaemia, inflammatory bowel disease, lupus, malignancy, HIV, and tuberculosis Source Mesenteric adenitis - disease-level clinical article (mesenteric-adenitis-full.txt) Status traced to the source above Rx: Pain and fever | Main treatment PAIN AND FEVER 1. IBUPROFEN [1st line] Adult 200 to 400 mg 3 to 4 times daily (maximum 1,200 mg daily) - A few days; the pain settles over days to weeks and does not need continuous treatment Peds 5-10 mg/kg/dose [child max 400 mg] (Child over 3 months: 5 to 10 mg/kg 3 to 4 times daily, maximum 30 mg/kg daily. Not for an infant under 3 months.) 3kg -> 15-30 mg/dose 4kg -> 20-40 mg/dose 5kg -> 25-50 mg/dose 6kg -> 30-60 mg/dose 7kg -> 35-70 mg/dose 8kg -> 40-80 mg/dose 9kg -> 45-90 mg/dose 10kg -> 50-100 mg/dose 11kg -> 55-110 mg/dose 12kg -> 60-120 mg/dose 13kg -> 65-130 mg/dose 14kg -> 70-140 mg/dose 15kg -> 75-150 mg/dose 16kg -> 80-160 mg/dose 17kg -> 85-170 mg/dose 18kg -> 90-180 mg/dose 19kg -> 95-190 mg/dose 20kg -> 100-200 mg/dose 21kg -> 105-210 mg/dose 22kg -> 110-220 mg/dose 23kg -> 115-230 mg/dose 24kg -> 120-240 mg/dose 25kg -> 125-250 mg/dose 26kg -> 130-260 mg/dose 27kg -> 135-270 mg/dose 28kg -> 140-280 mg/dose 29kg -> 145-290 mg/dose 30kg -> 150-300 mg/dose 31kg -> 155-310 mg/dose 32kg -> 160-320 mg/dose 33kg -> 165-330 mg/dose 34kg -> 170-340 mg/dose 35kg -> 175-350 mg/dose 36kg -> 180-360 mg/dose 37kg -> 185-370 mg/dose 38kg -> 190-380 mg/dose 39kg -> 195-390 mg/dose 40kg -> 200-400 mg/dose 41kg -> 205-400 mg/dose (upper capped) 42kg -> 210-400 mg/dose (upper capped) 43kg -> 215-400 mg/dose (upper capped) 44kg -> 220-400 mg/dose (upper capped) 45kg -> 225-400 mg/dose (upper capped) 46kg -> 230-400 mg/dose (upper capped) 47kg -> 235-400 mg/dose (upper capped) 48kg -> 240-400 mg/dose (upper capped) 49kg -> 245-400 mg/dose (upper capped) 50kg -> 250-400 mg/dose (upper capped) Source MSF Essential Drugs 2024 (ibuprofen oral monograph) Why The cited article says mesenteric adenitis is self-limiting and needs no treatment once the surgical diagnoses have been excluded, and that management is supportive care with hydration and pain control using non-steroidal anti-inflammatory medicines. That is the whole of the drug treatment, and the dose is the standard one from the MSF monograph. Caution EXCLUDE APPENDICITIS FIRST. Giving an anti-inflammatory to a child whose real problem is a surgical abdomen buys hours that the child does not have. Give it with food. Avoid it in dehydration, in significant kidney disease, in active peptic ulceration and in asthma made worse by aspirin or another NSAID. TELL THE FAMILY IT TAKES TIME. The article stresses that improvement may come slowly over several weeks and that saying so prevents a lot of anxiety and repeat attendance - and it asks for planned review during that window rather than open-ended reassurance. Egypt NOVA-PROFEN 100MG/5ML ORAL SUSP. 100ML SANOFI 2.25 EGP -> ? strength differs BRUFEMOL-N SUSP. 60 ML ARAB DRUG COM... 4.50 EGP [? strength differs] IBUFEN 2% SUSP. 60ML ALEXANDRIA 4.50 EGP [? strength differs] MARCOFEN 100MG/5ML SUSP. 120ML GLAXO SMITHKLINE 5.85 EGP [? strength differs] PEOPOBRUF 50MG/1.25ML ORAL DROPS. 15 ML DELTA PHARMA > PEOPLE PHARMA 9.00 EGP -> ? strength differs IBUCALMIN 100MG/5ML SYRUP 120 ML MASH PREMIERE 28.00 EGP [? strength differs] MEGAFEN-N 100MG/5ML SUSP. 120 ML RAMEDA 35.00 EGP [? strength differs] BRUFEN 100MG/5ML SYRUP 150ML KAHIRA > ABBO... 44.00 EGP [? strength differs] BRUFEMOL-N SUSP. 120 ML ARAB DRUG COM... 4.75 EGP -> ? strength differs, ? different route - not oral liquid IBUPROFEN 100MG/5ML SUSP. 120 ML SEDICO 5.00 EGP -> ? strength differs, ? different route - not oral liquid MAIN TREATMENT 2. REFERRAL & SAFETY-NETTING (NO DRUG THERAPY) [1st line] Adult Source Mesenteric Adenitis - StatPearls (NCBI Bookshelf NBK560822) - https://www.ncbi.nlm.nih.gov/books/NBK560822/ Why Mesenteric adenitis matters because of what it is mistaken for. It needs no drug and no operation, but it can only be called after appendicitis has been excluded, so the safe use of the diagnosis is as a reason to image rather than a reason to reassure. Caution IT IS AN APPENDICITIS MIMIC, AND THAT IS THE WHOLE POINT - right lower quadrant pain of sudden onset looks so much like appendicitis that it has long been taken for it. In one series, 70 children were given a clinical diagnosis of acute appendicitis, and 16% of them turned out in the end to have mesenteric adenitis - established at operation, on imaging, or by how the illness ran. THE AGE AND THE STORY THAT POINT TOWARDS IT - below the age of ten, a child with sudden right lower quadrant pain is likelier to have mesenteric adenitis than appendicitis, and the adenitis often comes on the heels of a recent gastroenteritis or an upper respiratory infection. AND THE EXAMINATION DIFFERENCE, SUCH AS IT IS - surgeons often observe that pressing on the abdomen hurts markedly less in mesenteric adenitis than it does in acute appendicitis. Softer tenderness is a hint, never a discharge. BLOOD TESTS WILL NOT SETTLE IT - the white count and the CRP are usually raised, but normal values do NOT exclude the diagnosis. The article's own verdict on those same tests is that they are no help in separating appendicitis from intussusception or from mesenteric adenitis. ULTRASOUND IS WHAT SETTLES IT - ultrasound of the abdomen is the standard against which the diagnosis is made. What is diagnostic is mesenteric lymph nodes that are enlarged and hypoechoic, with no thickened blind-ending tube - an inflamed appendix - to be seen. For size, at least one node must be abnormally enlarged, 8 mm or more measured across its short axis. LARGE NODES ALONE DO NOT EXCLUDE AN APPENDIX - nodes enlarge in acute appendicitis too, and in a perforated one, which is part of why this is hard to call; but in appendicitis they tend to be fewer and less swollen. SEND THE URINE TOO - a urinalysis earns its place by excluding a urinary tract infection. NO DRUG TREATS IT - mesenteric adenitis settles by itself and calls for no treatment, so the first job in managing it is to exclude the diagnoses that need an operation. What is left is supportive: fluids intravenously, and pain relief with a non-steroidal anti- inflammatory. The article states no paediatric amount for any of them. WARN THE FAMILY IT IS SLOW, OR THEY WILL GO SOMEWHERE ELSE - it matters to tell them that getting better may take a while, coming on gradually across several weeks. The pain usually goes within four weeks and leaves nothing behind. BOOK THE FOLLOW-UP RATHER THAN LEAVING IT OPEN - it is reasonable to set clinic appointments through that period, to see how the child is progressing and to answer what worries the family. WHAT ELSE HIDES BEHIND THE SAME PAIN - the article's own differential runs to appendicitis, intussusception, a ruptured ovarian cyst, an ovarian abscess, ectopic pregnancy, endometriosis, torsion of an ovary or of a testis, epididymitis and pelvic inflammatory disease; and further down, the inflammatory bowel diseases - Crohn's and ulcerative colitis - along with malignancy, the zoonotic infections, infectious mononucleosis and tuberculosis. SOME OF IT IS BACTERIAL AND WORTH REMEMBERING IN EGYPT - two gram-negative organisms are well known to cause it: Yersinia pseudotuberculosis and Yersinia enterocolitica. Salmonella, E coli and the streptococci are named as further culprits. THE HARM OF GETTING IT WRONG RUNS BOTH WAYS - these children are frequently labelled appendicitis, and in the past that meant an appendix removed for nothing. Getting the diagnosis wrong exposes a patient to invasive procedures they did not need, and to whatever those procedures then cost them. Prices are indicative (dataset snapshot 2026-06); verify with the pharmacy. ``` --- Dawaa Reference is a reference for prescribers, not a medical device, and does not replace clinical judgement. [Privacy policy](/privacy)