<s>[INST] my 9yr old came home from school with a small lower right abdominal bruise. She said she fell running in Physical Education. She feels no pain. Should i be concerned about the bruise? What are the signs that it can be something serious? Her appetite and mood are normal. [/INST] Hi,Thank you for asking question on health care magic.Injury to the abdomen resulting in bruise,even though minor injury,should be viewed seriously.You have to rule out injury to internal organs by doing an ultrasound study.Better take him to ER and show him to a doctor.Hope this answer will serve your purposePlease feel free to ask any more queries if requiredTake careDr.M.V.Subrahmanyam MD;DCHAssociate professor of pediatrics </s>