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Persistent trigeminal artery as a cause of dizziness
R A Battista1, J A Kwartler, D M Martinez
1Rush-Presbyterian-St. Lukes Medical Center, Department of Otolaryngology and Bronchoesophagology, Chicago, Illinois 60612-3865, USA.
Ear, Nose, & Throat Journal
|January 1, 1997
Summary
A rare persistent trigeminal artery (PTA) combined with carotid artery disease can cause vertigo and dizziness. Recognizing this uncommon cause is crucial for accurate diagnosis and treatment of neurological symptoms.
Area of Science:
- Neurology
- Vascular Neurology
- Neuroanatomy
Background:
- Vertigo and dizziness are common symptoms requiring otolaryngologist evaluation.
- Identifying uncommon etiologies is key for effective patient management.
- Vertebrobasilar insufficiency symptoms can arise from various vascular anomalies.
Observation:
- A middle-aged woman experienced vertigo and symptoms mimicking vertebrobasilar insufficiency.
- Her symptoms were linked to a persistent trigeminal artery (PTA) and concurrent occlusive carotid artery disease.
- A PTA, a rare carotid-basilar anastomosis, occurs in 0.1%-0.6% of cerebral angiograms.
Findings:
- The persistent trigeminal artery (PTA) often results in hypoplasia or agenesis of the ipsilateral posterior communicating artery.
- The internal carotid artery becomes the primary blood supply source for the upper brainstem region.
- This anatomical variation can lead to vertebrobasilar insufficiency symptoms.
Implications:
- Increased physician awareness of PTA and associated carotid disease is vital for diagnosing vertigo.
- This case highlights the importance of considering rare vascular anomalies in dizziness evaluations.
- Understanding the appearance and clinical significance of PTA aids in managing complex neurological presentations.