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[Arteriovenous malformations in deep cerebral area. Topographic classification. Therapeutic possibilities and results about 46 cases (authors' translation)].

The authors study the clinical dispositions of 46 arteriovenous malformations developed in deep cerebral area and detected in 41 cases by an haemorrhagic accident and after make a radiological classification. They class the M.A.V. of nucleus centralis with the localizations of the nucleus caudate's head, the insula and lentiformis nucleus and the capsulo thalamic area; the ventriculo-cisternalis M.A.V., the corpus callosum M.A.V. and complicated forms. With this classification they analyse the different operative technics that permit to obtain a complete extirpation in 26 cases about 39 operated patients. The results are excellent in 19 cases, good for 8 cases and mediocre in 4 cases. Eight patients are died during post operative time. The most important factors for the final result are the disturbance of consciousness before operative time and the malformations developed about several anatomical area. At last the authors insist on the fact that, if during next years, the embolism technics are not effective, the operation will be indicate in spite of the technical difficulties because the spontaneous evolution is always dangerous.