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  • Title: Trigonal cavernous angioma: a short illustrated review.
    Author: Stavrinou LC, Stranjalis G, Flaskas T, Sakas DE.
    Journal: Acta Neurochir (Wien); 2009 Nov; 151(11):1517-20. PubMed ID: 19300903.
    Abstract:
    PURPOSE: Intraventricular cavernomas are rare. Even more rare are those presenting in the trigone of the lateral ventricles. METHODS: We performed a search of the literature of the last 30 years and identified all cases of intraventricular cavernous angiomas. Trigonal cavernomas were separately identified and analysed. Our search yielded a total of 13 trigonal cavernomas. RESULTS: Of a total of 61 intraventricular cases, 13 were located in the trigone of the lateral ventricles. The most prominent presenting symptom was intracranial hypertension (68.9%), followed by seizures (18.2%) and hemorrhage (13.1%).The literature review revealed a trend of intraventricular cavernomas to present with intracranial hypertension rather than seizures or focal neurologic deficit, unlike their intraparenchymal counterparts. We feel that this difference has received little attention in the international literature. We discuss a possible pathogenetic mechanism for the presence of intracranial hypertension and address different aspects of diagnosis and treatment of this benign lesion. CONCLUSIONS: Trigonal cavernomas are benign lesions that have an excellent outcome after radical excision. Symptoms and signs of intracranial hypertension and hydrocephalus may be the prominent initial presentation of this rare ailment.
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