Bilateral Persistent Trigeminal Arteries, One of Them Ending in the Posterior Inferior Cerebellar Artery

Meila, Dan; Papke, K.; Schlunz-Hendann, Martin; Mangold, Andreas; Jacobs, Collin; Brassel, Friedhelm

doi:10.1007/s00062-010-0047-0

Cited by 10 publications

(3 citation statements)

References 23 publications

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“…Four of our 24 patients showed Type 5b (16.7%). Rarely, PPTA has been found on both sides of the internal carotid arteries (9). The bilateral PPTA was not found in our study.…”

Section: Discussionmentioning

confidence: 99%

“…6 Type 5b (case 3), Oblique lateral MRA projection (a) shows a small PPTA arising from the right internal carotid artery (large arrow). The right internal carotid artery injection during digital subtraction angiograph (DSA) in the lateral projection (b), demonstrates that the right PPTA (large arrow) is feeding into the right hemispheric anteroinferior cerebellar artery territory (AICA), while the Townes projection of the left vertebral injection (c) demonstrates the lack of visualization of the right AICA territory, thus indicating the separate origin of this artery (small arrows) sides of the internal carotid arteries (9). The bilateral PPTA was not found in our study.…”

Section: Classification Of Pptamentioning

confidence: 98%

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Classification of persistent primitive trigeminal artery (PPTA): a reconsideration based on MRA

et al. 2011

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“…Four of our 24 patients showed Type 5b (16.7%). Rarely, PPTA has been found on both sides of the internal carotid arteries (9). The bilateral PPTA was not found in our study.…”

Section: Discussionmentioning

confidence: 99%

Section: Classification Of Pptamentioning

confidence: 98%

Classification of persistent primitive trigeminal artery (PPTA): a reconsideration based on MRA

et al. 2011

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“…Based on this figure, if bilateral PTAVs occur independently, their prevalence is estimated at about 0.0012%. Recently, Meila et al [15] reported a case of left PTA and right PTAV, but to my knowledge, this is the first report of a case of bilateral PTAVs.…”

Section: Discussionmentioning

confidence: 88%

Bilateral Persistent Trigeminal Artery Variants Diagnosed by MR Angiography

Uchino

2011

Cerebellum

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A persistent trigeminal artery (PTA) is the most common anastomosis between the carotid and vertebrobasilar system. A PTA variant (PTAV) is a rare anomaly in which the cerebellar artery arises from the internal carotid artery (ICA) without connection with the basilar artery (BA). I present what I believe is the first report of bilateral PTAVs diagnosed using magnetic resonance (MR) angiography and briefly discuss the embryology of this rare anomaly. An 81-year-old woman with small infarctions underwent cerebral MR imaging and MR angiography with a 1.5-tesla imager for the evaluation of brain lesions. An MR angiography was obtained using the standard noncontrast three-dimensional time-of-flight technique. The MR angiographic demonstration of bilateral anterior inferior cerebellar arteries arising from the precavernous segment of the ICA without anastomosis to the BA indicated bilateral PTAVs. This is the first report of bilateral PTAVs diagnosed by MR angiography. The literature review indicates that an estimated prevalence of bilateral PTAVs is about 0.0012%.

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Bilateral Persistent Primitive Trigeminal Arteries Associated with Trigeminal Neuralgia

et al. 2011

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Persistent carotid-vertebrobasilar anastomoses (PCVBA) include the primitive trigeminal artery (PTA), the primitive otic artery (POA), the primitive hypoglossal artery and proatlantal arteries (ProAs). The PTA is the most commonly seen of these accounting for approximately 80-85% of PCVBAs. The PTA which connects the internal carotid artery (ICA) to the basilar artery (BA) may occasionally connect to the superior or posterior inferior cerebellar arteries without interposition to the BA. It is then referred to as a persistent trigeminal artery variant (PTAV), an anomalous carotid-cerebellar anastomosis. Bilateral occurrence of PTA is extremely rare. During vertebral artery (VA) development the anterior radicular artery of segment C1 from the proatlantal artery of Padget evolves into the intradural component of the VA (V4 segment) plus a short extradural segment (distal V3 segment). Agenesis of a single anterior radicular artery of ProA results in the absence of one distal VA associated with an unremarkable contralateral VA and the BA. Absence or hypoplasia of the terminal portion of one VA is a commonly observed anatomic variant. However, absence of the terminal portions of both VAs is exceptional. A rare case of bilateral PTAs is presented with unilateral PTA and a contralateral PTAV causing trigeminal neuralgia. Furthermore, the bilateral PTAs were associated with the absence of the proximal portion of the BA in addition to the bilateral lack of a distal VA. This finding comes as a logical consequence of the developmental anatomy of the vertebrobasilar junction and is consistent with the assumed congenital nature of the anatomic variant.

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Bilateral Persistent Trigeminal Arteries, One of Them Ending in the Posterior Inferior Cerebellar Artery

Cited by 10 publications

References 23 publications

Classification of persistent primitive trigeminal artery (PPTA): a reconsideration based on MRA

Classification of persistent primitive trigeminal artery (PPTA): a reconsideration based on MRA

Bilateral Persistent Trigeminal Artery Variants Diagnosed by MR Angiography

Bilateral Persistent Primitive Trigeminal Arteries Associated with Trigeminal Neuralgia

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