What's the Diagnosis? Case by Lauren Murphy

2 year-old male with no PMHx is brought to the ED for intermittent abdominal pain for the past two days. Mom notes that the child will crouch down into a ball when he has pain, which only lasts for a few minutes at a time. He has decreased solid food intake but no vomiting or diarrhea and is otherwise well. Vitals and physical exam are unremarkable. The ultrasound is shown below…what’s the diagnosis?

Category (Day):