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[De novo aneurysm associated with a persistent primitive trigeminal artery: case report]
M Ishiguro1, T Nakagawa, A Yamamura
1Shinsapporo Neurological Hospital.
No Shinkei Geka. Neurological Surgery
|November 1, 1995
Summary
This study reports a rare case of a de novo anterior communicating artery aneurysm developing six years after initial angiography in a patient with a persistent primitive trigeminal artery. This highlights the need for vigilant follow-up imaging.
Area of Science:
- Neurology
- Vascular Surgery
- Radiology
Background:
- Persistent primitive trigeminal artery is a rare vascular anomaly.
- Aneurysms are abnormal blood vessel dilations, often associated with vascular anomalies.
- De novo aneurysm formation implies new onset without prior evidence.
Observation:
- A 65-year-old female presented with tinnitus and dural enhancement on CT.
- Initial angiography revealed a persistent primitive trigeminal artery but no aneurysm.
- Follow-up angiography six years later identified a de novo anterior communicating artery aneurysm.
Findings:
- The case describes a de novo unruptured anterior communicating artery aneurysm.
- This aneurysm was associated with a persistent primitive trigeminal artery.
- This specific association has not been previously reported in medical literature.
Implications:
- The findings underscore the importance of long-term surveillance for patients with persistent primitive trigeminal artery, even in the absence of initial aneurysm detection.
- Regular follow-up angiography is crucial for identifying de novo aneurysm formation.
- This case contributes to understanding the natural history of persistent primitive trigeminal artery and associated cerebrovascular risks.