Long terminal internal carotid artery mimicking an aneurysm

Case contributed by Dr Craig Hacking


Incidental right ICA aneurysm on CT brain.

Patient Data

Age: 70-75 years
Gender: Male

The right internal ICA is longer than the left, extending more superiorly into the sylvian fissure which mimics an aneurysm. No aneurysm or infundibulum is evident.

No other aneurysm identified. Left fetal P-comm.

No restricted diffusion. The remainder of the study is unremarkable.

Case Discussion

Here the terminal right ICA is abnormally long and higher than usually, representing an anatomic variant. You can understand how it was mistaken on a non contrast CT and even the T2 MRI as an aneurysm.

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Case information

rID: 37517
Case created: 11th Jun 2015
Last edited: 21st Aug 2017
Inclusion in quiz mode: Included

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