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Persistent Primitive Olfactory Artery Type 4 with Fusiform Aneurysm: A Case Report.
Journal of the Korean Society of Radiology
|December 18, 2023
Summary
A rare persistent primitive olfactory artery (PPOA) variant was identified with a fusiform aneurysm. This finding highlights the importance of recognizing unusual cerebral artery variations and associated risks like aneurysms.
Area of Science:
- Neuroanatomy
- Vascular Neurology
- Radiology
Background:
- The persistent primitive olfactory artery (PPOA) is a rare anatomical variant of the anterior cerebral artery.
- PPOA is associated with increased risk of aneurysm formation due to specific hemodynamic stress at its hairpin turn.
Observation:
- A case of PPOA type 4 is presented in a 46-year-old female experiencing occasional headaches.
- Imaging revealed an anomalous branch from the left A1 segment, coursing along the olfactory tract with a hairpin turn posterior to the olfactory bulb.
Findings:
- The PPOA variant was observed to connect to the left accessory middle cerebral artery.
- A fusiform aneurysm was identified at the hairpin turn segment of the PPOA.
Implications:
- This case underscores the necessity of recognizing and diagnosing rare PPOA variations.
- Understanding these variations is crucial for accurate diagnosis and management of associated cerebrovascular pathologies like aneurysms.
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