A challenging case of spontaneous idiopathic omental infarction in a trisomy 21 patient.

Background: Omental infarction (OI) is a rare cause of acute abdominal pain that is often missed out. Due to its non-specific presentation can mimic other commoner conditions such as acute appendicitis, acute diverticulitis, and tuberculosis abdomen.

Case Presentation: We present a 42-year-old gentleman with trisomy 21 presenting right iliac fossa pain.