Persistent primitive olfactory artery

Last revised by Dr Daniel J Bell on 24 May 2022

A persistent primitive olfactory artery (PPOA) is a rare variant of the proximal anterior cerebral artery 1,2. It is proposed to be more prone to aneurysms due to its sharp hairpin-like turn. Embryologically, the persistent primitive olfactory artery is the rostral division of the primitive internal carotid artery.

Gross anatomy

There are two variants of persistent primitive olfactory artery 1:

ADVERTISEMENT: Supporters see fewer/no ads

Cases and figures

  • Fig 1: carotid artery development - Gray's illustration
    Drag here to reorder.
  • Updating… Please wait.

     Unable to process the form. Check for errors and try again.

     Thank you for updating your details.