MSFinals-4116

A 6-year-old girl presents to the GP clinic complaining of abdominal pain that has been ongoing for 3 days. She has been eating and drinking normally, has no urinary symptoms, and her bowel habits have not changed. She had a mild cold last week, but it has since resolved. Other than this, she is a healthy and happy child. On examination, her abdomen is soft but tender to the touch throughout. Her temperature is 37.5 degrees Celsius. Her chest is clear, and her heart sounds are normal. What is the most probable cause of this girl’s abdominal pain?