Stag's antler sign (lungs)

The stag's antler sign, also known as the hands-up or inverted moustache sign, refers to upper lobe pulmonary venous diversion in pulmonary venous hypertension or pulmonary edema as seen on an erect frontal chest radiograph.

The prominence of upper lobe pulmonary veins resembles a stag's antlers. It is the earliest sign of pulmonary venous hypertension (grade 1 pulmonary edema). 

Rarely a unilateral form has been described 5.

This is not to be confused with the antler sign described for lung torsion.

Epidemiology

Association 

The commonest causes of stag antler sign on chest x-ray are 4:

See also

 

Inspired signs

Article information

rID: 41306
System: Chest, Vascular
Section: Signs
Synonyms or Alternate Spellings:
  • Hands-up sign
  • Unilateral inverted moustache sign
  • Inverted moustache sign
  • Antler sign (pulmonary venous hypertension)
  • Stag antler sign (pulmonary venous hypertension)

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Cases and figures

  • Figure 1: antlers (photo)
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  • Case 1
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  • Case 2
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