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 18 Apr 2024) https://doi.org/10.53347/rID-59835
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:
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
3 contributors -
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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.
References
- 1. Fanning NF, Kelleher MO, Ryder DQ. The pretzel sign: angiographic pattern of tortuous intra-aneurysmal blood flow in a giant serpentine aneurysm. (2003) British journal of neurosurgery. 17 (1): 67-71. Pubmed