Pediatric Omental Infarction

  • Etiology: Vascular compromise of the greater omentum
  • Imaging: Most commonly in right lower quadrant along ascending colon
  • Imaging US: Mass-like triangular area of echogenic fat that has increased echogenicity with poor through transmission at site of pain and anterior to or adjacent to colon
  • DDX:
  • Complications:
  • Treatment: Conservative
  • Clinical: Non-surgical cause of abdominal pain which is a surgical “do not touch” lesion

Radiology Cases of Omental Infarction

CT of omental infarction
Axial CT with contrast of the abdomen shows diffuse mesenteric fat stranding which is most prominent along the right side of the abdomen. The appendix (not pictured) measured 7-8 mm in diameter and was considered via measurement to be indeterminate for acute appendicitis.

Surgery Cases of Omental Infarction

Surgical image of omental infarction
Surgical laparoscopic images show an inflammatory mass on the right side of the abdomen in the center of each image at the tip of the laparoscope which is connected to the omentum and adherent to the anterior abdominal wall. The lower right image shows how the mass is twisted upon itself.