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  • Title: Successful resection of a left insular cavernous angioma using neuronavigation and intraoperative language mapping.
    Author: Duffau H, Fontaine D.
    Journal: Acta Neurochir (Wien); 2005 Feb; 147(2):205-8; discussion 208. PubMed ID: 15338338.
    Abstract:
    Despite recent literature advocating the surgical removal of symptomatic Cavernous Angiomas (CA), even in critical brain areas, very few observations of insular CA surgery have been described, particularly in the left hemisphere. We report the case of a successful resection of a CA located in the dominant insula, using both neuronavigation and intra-operative functional mapping. This 33-year-old right-handed man harbored a left insular CA, revealed by generalized seizures following a bleed confirmed on MRI. The preoperative examination was normal. A stereotactic-guided surgery was performed under local anesthesia, with intra-operative functional mapping using direct cortico-subcortical electrical stimulation in the awake patient--allowing the surgeon to achieve total resection of both CA and pericavernomatous gliosis, as shown on repeated postoperative MRIs. There was no postsurgical deficit, nor any seizure without treatment (follow-up: 4.5 years). The diagnosis of CA was confirmed by histological examination. Taking account of the risk of morbidity due to the natural history of CA, particularly in eloquent brain regions, we suggest to routinely consider the possibility of a surgical treatment in cases of symptomatic (left dominant) insular CA, using combined intra-operative anatomical and physiological localization methods.
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