Pretzel sign (serpentine aneurysm)

Last revised by Frank Gaillard ◉ ◈ on 28 Feb 2022

Citation, DOI, disclosures and article data

Citation:

St-Amant M, Gaillard F, Murphy A, Pretzel sign (serpentine aneurysm). Reference article, Radiopaedia.org (Accessed on 24 Mar 2023) https://doi.org/10.53347/rID-59835

DOI:

https://doi.org/10.53347/rID-59835

Permalink:

https://radiopaedia.org/articles/59835?iframe=true

rID:

59835

Article created:

27 Apr 2018, Maxime St-Amant

Disclosures:

At the time the article was created Maxime St-Amant had no recorded disclosures.

View Maxime St-Amant's current disclosures

Last revised:

28 Feb 2022, Frank Gaillard ◉ ◈

Disclosures:

At the time the article was last revised Frank Gaillard had no recorded disclosures.

View Frank Gaillard's current disclosures

Revisions:

3 times, by 2 contributors - see full revision history and disclosures

Systems:

Central Nervous System, Vascular

Sections:

Signs

The pretzel sign is seen on DSA and is indicative of a serpentine aneurysm ¹.

The sign refers to the sinusoid configuration of the intra-aneurysmal vascular channel seen in serpentine aneurysms, giving it the appearance of a pretzel.