Omental infarction in a child

Case contributed by Dr Fadi Aidi


Presented with acute right iliac fossa (RIF) pain extending to right upper quadrant and fever. Physical examination revealed abdominal tenderness in the RIF with positive rebound tenderness. C-reactive protein is elevated.

Patient Data

Age: 12 years
Gender: Male

Color Doppler ultrasound image of the right lower quadrant shows an ovoid area of echogenic fat that corresponds to the area of pain. No increased flow on color Doppler imaging.

The appendix is not visualized.


Selected images of a contrast enhanced abdomen CT scan in the portal venous phase.

Large (>5 cm) non-enhancing, elongated, fat attenuation mass lesion with hyperdense peripheral halo, located in the right upper quadrant, deep to the rectus abdominis muscle and adjacent to, but separate from, the ascending colon.

No bowel wall thickening or lymphadenopathy.

The appendix is normal - no signs of appendicitis.

The size and right-sided location make it much more likely to be a mesenteric infarction rather than epiploic appendagitis, although both are possible.

Case Discussion

Omental infarction is an uncommon cause of acute abdomen in children and is usually seen in obese children with appendicitis-like abdominal pain.

This diagnosis is important to make as it will be treated by conservatively rather than surgically.

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Case information

rID: 51562
Published: 9th Mar 2017
Last edited: 14th Aug 2019
Tag: omentum
Inclusion in quiz mode: Excluded

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