Middle cerebral artery fenestration

Last revised by Craig Hacking on 5 Jun 2017

Citation, DOI, disclosures and article data

Citation:

Goel A, Glick Y, Hapugoda S, et al. Middle cerebral artery fenestration. Reference article, Radiopaedia.org (Accessed on 04 Dec 2023) https://doi.org/10.53347/rID-25992

DOI:

https://doi.org/10.53347/rID-25992

Permalink:

https://radiopaedia.org/articles/25992

rID:

25992

Article created:

21 Nov 2013, Ayush Goel ◉

Disclosures:

At the time the article was created Ayush Goel had no recorded disclosures.

View Ayush Goel's current disclosures

Last revised:

5 Jun 2017, Craig Hacking ◉ ◈

Disclosures:

At the time the article was last revised Craig Hacking had no recorded disclosures.

View Craig Hacking's current disclosures

Revisions:

9 times, by 8 contributors - see full revision history and disclosures

Systems:

Central Nervous System

Sections:

Anatomy

Tags:

cases, refs

Synonyms:

Fenestration of the MCA
Fenestration of the middle cerebral artery
MCA fenestration

Middle cerebral artery (MCA) fenestration is a very rare anatomical variant of the middle cerebral artery, incidentally found during MR or CT angiography. It has an incidence of ~0.6% (range 0.2-1%) ¹.

Fenestration is the division of the vessel into two separate parallel channels which rejoin distally. It usually does not have any clinical significance but an aneurysm may arise from the proximal fenestration end.

It may mimic a dissection.