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Congress: ECR25
Poster Number: C-20382
Type: Poster: EPOS Radiologist (educational)
Authorblock: G. V. Irimescu; Bucharest/RO
Disclosures:
Gabriel Valeriu Irimescu: Nothing to disclose
Keywords: Anatomy, Neuroradiology brain, Vascular, CT-Angiography, MR-Angiography, Contrast agent-intravenous, Aneurysms
Learning objectives The persistent trigeminal artery (PTA) represents an important anatomical finding with significant implications for clinical practice, particularly within the field of radiology and neurosurgery.The persistent trigeminal artery (PTA) is a fascinating anatomical variant that highlights the complexities of cranial vascular development and the importance of thorough anatomical knowledge among medical professionals. As the most common persistent embryonic carotid-basilar anastomosis, the PTA serves as a critical reminder of the vascular structures established during early development, which, in certain individuals, may persist...
Read more Background The persistent trigeminal artery is recognized as the most prevalent of the persistent embryonic carotid-basilar anastomoses. During early embryonic development, this artery serves as a crucial connection between the internal carotid and basilar arteries. Typically, it regresses as other, more permanent connections develop.  However, in some individuals, it persists into adulthood. Though often an incidental finding on imaging studies, the PTA's presence can have profound clinical consequences, underscoring the need for awareness and recognition among healthcare professionals.The PTA typically originates...
Read more Findings and procedure details The identification of the PTA is aided by specific imaging characteristics, particularly on CT angiography (CTA) or magnetic resonance imaging (MRI), where it can be distinguished by unique signs such as the "tau sign" or the "trident sign." These imaging features provide critical clues that differentiate the PTA from other vascular entities and help guide accurate diagnosis.The presence of a PTA is associated with a range of clinical conditions, most notably vascular anomalies and neurological disorders. For instance, there is...
Read more Conclusion The recognition of a persistent trigeminal artery on imaging studies is of paramount importance for the accurate diagnosis and management of associated cerebrovascular and neurological conditions. By understanding the anatomical and clinical nuances of the PTA, radiologists, neurosurgeons, and other healthcare professionals can enhance patient outcomes through precise diagnosis and thoughtfully planned interventions. Raising awareness of this vascular variant and its implications allows for more informed clinical decisions, ultimately leading to optimized patient care and reduced risk of misdiagnosis or...
Read more References Salas, E., Ziyal, I. M., Sekhar, L. N., & Wright, D. C. (1998). Persistent primitive trigeminal artery: An anatomic study. Journal of Neurosurgery, 88(2), 300-305 Soehendra, N., & Holtmannspötter, M. (2008). Persistent trigeminal artery: Images and implication for the neuroradiologist. American Journal of Neuroradiology, 29(9), 1670-1672 Luh, G. Y., Dean, B. L., Tomsick, T. A., & Wallace, R. C. (1999). The persistent fetal carotid-vertebrobasilar anastomoses. American Journal of Neuroradiology, 20(4), 495-501.  Pieters, T. A., & TerBrugge, K. G. (2014). Persistent trigeminal artery: A...
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