Persistent Trigeminal Artery: A Unique Anatomic Specimen— Analysis and Therapeutic Implications

Abstract

A new variation of the persistent trigeminal artery is described, which is important to support the possibility that more than one variety of carotid-basilar anastomosis exists in this region.

Coil Embolization of an Aneurysm Located at the Trunk of the Persistent Primitive Trigeminal Artery -Case Report-

“…The pontine branches can be functioning vessels in the brainstem and PPTA occlusion may produce ischemic brainstem lesions. 15,17) However, the clinical implications of perforating arteries from the PPTA remain unclear in patients undergoing treatment for PPTA aneurysms.…”

“…Persistent primitive trigeminal artery (PPTA) is the most common embryological vascular remnant, 1,4) is located between the carotid and vertebrobasilar arteries, 17) and is recognized on 0.1-0.6% of cerebral angiograms. Saccular aneurysms associated with PPTA are very common, and account for 14-32% of all cerebral aneurysms.…”

“…3,4,6,7,11,14) Most aneurysms associated with the PPTA are located at the bifurcation of the carotid artery and the PPTA, whereas aneurysms arising at the PPTA trunk are extremely rare. The deep location of PPTA trunk aneurysms renders direct surgery very difficult, 17,18) so endovascular treatment has been attempted. 7,9) We present the case of an aneurysm at the trunk of the PPTA treated successfully by coil embolization using the balloon-assist technique.…”

Suboccipital Approach for Primitive Trigeminal Artery Obliteration Associated with Cavernous Aneurysm

“…6 PTA is divided into two groups (medial and lateral types). 4,7 Medial type of PTA perforates the sella turcica and joins the basilar artery. 4,7 Lateral type of PTA originates from C4/5 portion and courses along the cavernous sinus, Meckel's cave, and the trigeminal artery.…”

“…4,7 Medial type of PTA perforates the sella turcica and joins the basilar artery. 4,7 Lateral type of PTA originates from C4/5 portion and courses along the cavernous sinus, Meckel's cave, and the trigeminal artery. 4 The lateral one gives perforating arteries to the pons.…”