Surgical treatment of arteriovenous angiomas localised in the corpus callosum, basal ganglia and near the brain stem

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Abstract
Seven cases of deep angiomas, in regions near the midline, were operated on in the National Institute of Neurosurgery, Budapest. In four cases the malformation was not so circumscribed that it could be localized in one structure alone. On two occasions it involved the corpus callosum and the neighbouring hemispheral substance; in one instance it involved the head of the caudate nucleus and the lateral ventricle also. Two intraventricular angiomas, supplied by the choroidal arteries, involved the corpus striatum and the thalamus. Three cases of juxtapeduncular angiomas are described in this series. They were situated in the deep medial part of the temporal lobe, closely adhering to the peduncle, and supplied by branches of the posterior cerebral and the lateral choroidal arteries. In one case the malformation, which involved the thalamus, could be only partly removed. In six cases total extirpation was carried out. All patients are alive and six are working. No symptoms which were not present before operation have appeared. The importance of adequate radiological studies prior to surgery is emphasized. Attention is drawn to the possibility of eventual obstruction in the CSF circulation in the postoperative period following intraventricular manipulation.