The preoperative angiogram showed the aneurysm neck that was incorporated into the origin of the perforating artery.
Endovascular treatment for cerebral perforating artery aneurysms.
Any fascial strands that may compress the perforating artery
or vein (once twisted) should be meticulously divided (Fig.
Type D: It is formed by superior deep palmar branch of the ulnar artery which anastomoses with an enlarged superior perforating artery of the 2nd interspace.
Type A: The inferior deep branch of ulnar artery anastomoses with the perforating artery of the 2nd interspace.
The nutrient artery of the femur in general proceeds of the second perforating artery
and when two nutrient arteries exist, they tend to detach from the first and third perforating arteries (Goss, 1976).
The distal ends of the thoracodorsal vessels, close to the origin of the muscle, are ligated and dissected toward the axilla, being careful not to damage the delicate venae comitantes that accompany the perforating artery
In our cases, it was highly likely that many of the brainstem perforators incorporated into the aneurysm sac were occluded by thrombus at the time of diagnosis and that the perforating artery
territories involved were already supplied by collateral circulation.