I need to ask few more questions before answering your query. Early consultations can prevent complications. Kindly contact me on whatsapp chat  (84960595 six five) Dr Faisal Zoheb MBBS , MD PAEDIATRICS , PGPN (BOSTON), FELLOWSHIP IN NEONATOLOGY ( Newborn and vaccination specialist )

this is a common finding in almost all the patients i see in my opd with pain abdomen.. no need to worry. if it is persistent we need to evaluate with other tests.

for a 5-year-old, this is one of the most common and most benign incidental findings on an abdominal ultrasound. Abstinence from junk foods is also important,this might be one of the reasons for abdominal pain. Don't worry it will mostly subside.

These are normal findings. Need not worry.

No it is not dangerous. Usually the size increases whenever we get any infection. And On and off stomach pain also normal

Greetings Isolated mesenteric lymphadenopathy is generally not dangerous and is a very common, benign finding in a 5-year-old child experiencing recurrent abdominal pain. The lymph nodes are part of her active immune system, and their size of 15x4 mm appears consistent with a reactive response to everyday minor bugs or her recent chickenpox infection. Because her pain resolves rapidly on its own and she is growing normally, this is highly reassuring. However, please double-check her physical scan reports and blood values to confirm there are no signs of a more complex issue. You should consult a pediatrician if she develops persistent fever, severe vomiting, or changes in her bowel habits. Alternative causes for her brief stomach pains could simply be childhood constipation, gas, or mild food intolerances

Nothing to worry at present .

They are generally not dangerous and benign. If she continues to have abnormal pain, further investigations might be required.

Mesenteric lymph nodes are common in children and often enlarge after viral infections. The node size described is not worrisome by itself. If the child is growing well and the pain is brief and self-resolving, this usually does not indicate a serious disease.