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Fenestration of the vertebrobasilar junction
R De Caro1, A Parenti, P F Munari
1Institute of Human Anatomy, University of Padova, Italy.
Acta Neurochirurgica
|January 1, 1991
Summary
A rare fenestration of the vertebrobasilar junction was identified in an autopsy. This vascular anomaly was linked to vertebral artery thrombosis and Wallenberg syndrome.
Area of Science:
- Neurology
- Vascular Anatomy
- Pathology
Background:
- The vertebrobasilar junction is a critical area for blood supply to the brainstem and cerebellum.
- Fenestrations, or incomplete divisions, of arteries can occur during development.
- Wallenberg syndrome results from ischemia in the lateral medulla, often due to vertebral artery issues.
Observation:
- Autopsy revealed a fenestration at the vertebrobasilar junction in an 80-year-old male.
- The fenestration was associated with thrombosis in the vertebral arteries.
- This led to the development of a left Wallenberg syndrome.
Findings:
- The left limb of the fenestration appeared to be the true origin of the basilar artery, with a significant diameter.
- The right limb was smaller and bridged the right vertebral artery to the basilar trunk.
- The fenestration may represent a persistent primitive lateral vertebrobasilar anastomosis rather than incomplete fusion.
Implications:
- Understanding rare vascular anomalies like fenestrations is crucial for diagnosing cerebrovascular diseases.
- This case highlights a potential cause of vertebral artery thrombosis and subsequent ischemic events.
- The findings contribute to the understanding of embryological development of the vertebrobasilar system.