Neurologia medico-chirurgica
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Neurol. Med. Chir. (Tokyo) · Feb 1994
Review Case ReportsPrimitive trigeminal artery variant associated with intracranial ruptured aneurysm and cerebral arteriovenous malformation--case report.
A 48-year-old female presented with a unique combination of ruptured aneurysm of the right middle cerebral artery (MCA) manifesting as sudden loss of consciousness associated with arteriovenous malformation (AVM) in the right parietal lobe and left primitive trigeminal artery (PTA) variant. Angiography revealed the right MCA aneurysm, AVM fed by the right anterior cerebral artery and MCA, and contralateral PTA variant. The PTA variant was an anomalous posterior cerebral artery originating from the ipsilateral cavernous internal carotid artery. The neck of the aneurysm was successfully clipped and the AVM was totally removed.
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Neurol. Med. Chir. (Tokyo) · Feb 1994
Factors influencing the recurrence rate of intracranial meningiomas after surgery.
The postoperative recurrence rate was examined in 242 patients with intracranial meningiomas to identify correlations with age, location, histology, or extent of surgery (Simpson's grade). There was no significant difference in the recurrence rate among the histological subtypes, but malignant meningiomas and hemangiopericytomas tended to recur earlier. ⋯ The recurrence rates significantly decreased in the order Simpson's grade I surgery, grade II or III surgery, and grade IV surgery (p < 0.001). These results indicate that the most important factor to influence recurrence is the extent of surgical removal.