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

Weon, Young Cheol; Choi, Seong Hoon; Hwang, Jae Cheol; Shin, Sang‐Goo; Kwon, Woon Jung; Kang, Byeong Seong

doi:10.1258/ar.2011.110191

Cited by 40 publications

(36 citation statements)

References 19 publications

(34 reference statements)

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“…PTA variants have been assumed to be rare (14). The PTA was found in 0.33% of all patients undergoing MRI, and, in 16.7% of the patients identified as having PTA, the PTA flowed into the AICA (15), as seen in the current case.…”

Section: Discussionsupporting

confidence: 53%

Recurrent Isolated Abducens Nerve Paresis Associated with Persistent Trigeminal Artery Variant

et al. 2012

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We report a 74-year-old woman who presented with recurrent isolated abducens nerve paresis. Cranial magnetic resonance imaging revealed that the right abducens nerve was sandwiched between the right internal carotid artery and a persistent trigeminal artery (PTA) variant, which might have led to neurovascular compression of the abducens nerve, resulting in abducens nerve damage. Normal variants of PTA, which are cerebellar arteries originating from a precavernous portion of the internal carotid artery, must be carefully observed as such variants can potentially cause a neurovascular compression of the abducens nerve.

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Section: Discussionsupporting

confidence: 53%

Recurrent Isolated Abducens Nerve Paresis Associated with Persistent Trigeminal Artery Variant

et al. 2012

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“…More recently, a new MRA based classification has been proposed where, in addition to the original Saltzman descriptions, 2 more types have been included [20]. PPTA can also be associated with aneurysms of circle of Willis, arteriovenous malformations, and fistulas.…”

Section: Discussionmentioning

confidence: 99%

“…Recognition of the type of PPTA and associated vascular abnormalities are needed for the optimal diagnostic workup of patients with vertebrobasilar insufficiency. Other therapeutic implications include knowledge prior to endovascular interventions to prevent any risk of embolization from the carotid to posterior circulation during procedures and prior to surgery around sella and cavernous sinus region to prevent inadvertent damage to these arteries leading to haemorrhage and ischemia [20]. …”

Section: Discussionmentioning

confidence: 99%

Persistent Primitive Trigeminal Artery: An Unusual Cause of Vascular Tinnitus

Arora

Jana

2013

Case Reports in Otolaryngology

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Pulsatile tinnitus is generally of vascular origin and can be due to arterial, venous, or systemic causes. While certain congenital anatomical variants and arterial vascular loops have been commonly found in symptomatic patients undergoing imaging, persistent primitive trigeminal artery in association with isolated tinnitus is unusual. Thus we report a patient with unilateral isolated pulsatile tinnitus who was evaluated with magnetic resonance angiography and was found to have a persistent primitive trigeminal artery. We also briefly discuss vascular tinnitus as well as the embryology, imaging, and classification of persistent primitive trigeminal artery with the clinical implications.

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“…Tab. 1 Übersicht über die Weon-Klassifikation, einer radiologischen Einteilung der PPTA anhand ihres Versorgungsmusters nach Weon et al [4].…”

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“…0,1-0,76 %[3] der Bevölkerung geschätzt. Die radiologische Einteilung erfolgt auf Grundlage der vertebrobasilären Gefäßversorgung nach Saltzmann[5] und Weon[4]…”

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Erklärt eine persistierende Arteria trigemina primitiva ein kardioembolisches Muster ischämischer Läsionen im zerebralen MRT?

2016

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Zusammenfassung Der hier dargestellte Fall illustriert beispielhaft, dass das Vorliegen einer persistierenden Arteria trigemina primitiva (englisch ?persisting primitive trigeminal artery?, PPTA) ein kardioembolisches Muster isch?mischer L?sionen im Bildbefund vort?uschen kann, obwohl die Infarktquelle in der linksseitigen Arteria carotis interna gefunden wurde und sich trotz ausf?hrlicher Suche keine weiter proximale gelegene Emboliequelle nachweisen lie?. Die PPTA ist die am h?ufigsten persistierende karotido-basil?re Anastomose und verbindet die Arteria carotis interna im C4-Segment mit der Arteria basilaris. Eine PPTA liegt bei ca. 0,06?0,76% der Bev?lkerung vor. Im klinischen Alltag bleibt eine PPTA wahrscheinlich h?ufig unentdeckt. Der Nachweis einer PPTA erfolgt meist nur, wenn eine Angiografie erfolgt. Die PPTA ist mit verschiedenen Ver?nderungen im vertebrobasil?ren Stromgebiet, insbesondere Hypoplasien der proximalen Gef??abschnitte verbunden. Es existieren Fallberichte zu vertebrobasil?ren Isch?mien bei Patienten mit PPTA, ein signifikant erh?htes Risiko von Hirninfarkten oder transitorisch isch?mischen Attacken bei Patienten mit PPTA scheint nicht vorzuliegen.

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

Abstract: This study revealed five types of PPTA and necessitates an adjustment of the previous classification of PPTA on the basis of our MRA examinations. A PPTA should be considered by both the clinician and the radiologist who interpret MR angiography.

Cited by 40 publications

References 19 publications

Recurrent Isolated Abducens Nerve Paresis Associated with Persistent Trigeminal Artery Variant

Recurrent Isolated Abducens Nerve Paresis Associated with Persistent Trigeminal Artery Variant

Persistent Primitive Trigeminal Artery: An Unusual Cause of Vascular Tinnitus

Erklärt eine persistierende Arteria trigemina primitiva ein kardioembolisches Muster ischämischer Läsionen im zerebralen MRT?

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