Collar sign in diaphragmatic rupture

The collar sign, also called the hourglass sign, is a helpful sign for diagnosis of diaphragmatic rupture on coronal or sagittal CT/ MR images and barium studies. It refers to a waist-like or collar-like appearance of herniated organs at the level of the diaphragm.

See also

Inspired signs
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Article information

rID: 21689
Section: Signs
Tag: cases
Synonyms or Alternate Spellings:
  • Hour glass sign (diaphragmatic rupture)
  • Collar sign (diaphragmatic rupture)
  • Hourglass sign
  • Hour glass sign

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Cases and figures

  •  Case 1 - on barium study
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  • Case 2
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  • Case 3
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