Stag's antler sign (lungs)

Last revised by Joshua Yap on 21 Feb 2024

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.



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

See also

ADVERTISEMENT: Supporters see fewer/no ads

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.