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[Vascular anomalies associated with anterior communicating aneurysms]
No Shinkei Geka. Neurological Surgery
|January 1, 1988
Summary
Vascular anomalies, including median artery of the corpus callosum and anterior communicating artery duplication, frequently accompany anterior communicating artery aneurysms. Preoperative diagnosis of these anomalies is often challenging with standard angiography.
Area of Science:
- Neurosurgery
- Vascular Neurology
- Radiology
Context:
- Anterior communicating artery aneurysms (ACoAAs) are a significant neurosurgical concern.
- Associated vascular anomalies can complicate surgical approaches and preoperative diagnosis.
- Direct surgical intervention via a bifrontal trans-interhemispheric approach has been utilized.
Purpose:
- To report the incidence of vascular anomalies associated with ACoAAs.
- To evaluate the diagnostic accuracy of preoperative angiography for these anomalies.
- To describe the anatomical relationship between ACoAA and median artery of the corpus callosum.
Summary:
- Direct operations on 206 ACoAAs revealed associated vascular anomalies in 21.4% of cases.
- Common anomalies included median artery of the corpus callosum (13.1%) and ACoA duplication (9.7%).
- Preoperative angiographic diagnosis of duplications was impossible, and median artery diagnosis was unreliable (41%).
- Most ACoAAs in patients with median artery of the corpus callosum occurred at the trifurcation involving the A2 segment and the median artery.
Impact:
- Highlights the high prevalence of challenging vascular anomalies in ACoAAs.
- Underscores the limitations of conventional angiography in detecting these anomalies preoperatively.
- Provides crucial anatomical insights for surgical planning and risk assessment in ACoA aneurysm treatment.