Macaroni sign (arteries)

Last revised by Arlene Campos on 12 Jan 2024

The macaroni sign is a sign seen in Takayasu arteritis on ultrasound. It represents the smooth, homogeneous and moderately echogenic circumferential thickening of the arterial wall that occurs in Takayasu arteritis.

The sign is highly specific for Takayasu arteritis, more commonly noted in the common carotid artery (CCA).  

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.