Inverted "V" sign

The inverted "V" sign, also known as lateral umbilical ligament sign, is a sign of pneumoperitoneum manifested by visualization inverted "V"  shape in the pelvis on supine view of abdominal radiographs. It represent free air outlining the lateral umbilical ligaments. In infants, the lateral umbilical ligaments contain the umbilical arteries, while in adults, they contain the inferior epigastric vessels.

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Article Information

rID: 48934
Section: Signs
Synonyms or Alternate Spellings:
  • Lateral umbilical ligament sign

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