It helps to find an image online of the path of the Internal Corotid Artery so you can see where your is along the path in the brain. It gets complicated. I put some basics below but this will be easier with pictures. You'll see once you start looking. I would suggest focusing on the Communicating or Terminal C7 part of the artery to see what exactly happens in the brain there and what it branches into or off of.
The Internal Corotid Artery is subdivided into 4 parts, the cervical, petrous, cavernous, and cerebral with 7 segments within the 4 parts which are the Cervical segment, or C1, Petrous segment, or C2, Lacerum segment, or C3, Ophthalmic, Cavernous segment, or C4, Clinoid segment, or C5, Ophthalmic, or supraclinoid segment, or C6, and Communicating, or terminal segment, or C7.
Yours is a Cerebral (in the brain) Aneurysm in the Communicating or Terminal C7 SEGMENT which I believe falls within the Cerebral PART of the Internal Corotid Artery's path.
The following link explains this all in detail with images to help. http://en.wikipedia.org/wiki/Internal_carotid_artery
C7: Communicating segment
The communicating segment, or terminal segment, or C7, of the internal carotid artery passes between the optic and oculomotor nerves to the anterior perforated substance at the medial extremity of the lateral cerebral fissure. Angiographically, this segment extends from the origin of the posterior communicating artery to the bifurcation of the internal carotid artery.
The named branches of the communicating segment are:
The internal carotid then divides to form the anterior cerebral artery and middle cerebral artery. The internal carotid artery can receive blood flow via an important collateral pathway supplying the brain, the cerebral arterial circle, which is more commonly known as the Circle of Willis.
C7: Branches from the communicating portion
I would ask your doctor as much as you can as far as what this part of the brain, as far as the nerves, or glands it might impact, if at all. Mine was in the cavernous segment. I believe, although I could be wrong, that the pipeline embolization device is only used in the cavernous segment on widemouth types of aneurysms which is how mine was treated. Although many people don't have any symptoms of recovery time, I did due to the size and how many nerves it was putting pressure on and it effected the whole side of my face and I lost part of my vision in one eye. Everyone is different. It's been almost a year and I'm just getting back to normal. I had a giant (over 1 1/2") wide mouth.
There are 4 sizes of aneurysms.
- Small aneurysms are less than 5 mm (1/4 inch).
- Medium aneurysms are 6–15 mm (1/4 to 3/4 inch).
- Large aneurysms are 16–25 mm (3/4 to 1 1/4 inch).
- Giant aneurysms are larger than 25 mm (1 1/4 inch).
This will get you started as well as all the input you have already received. Please let me know if you need any help. I didn't figure it out until after surgery. It happened so fast for me, within 48 hours of finding it I had no idea what was going on.
The best of luck to you and keep in touch.