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[Arteriovenous fistulae of the dura mater. Clinical and radiological study of 13 cases].

The authors studied 13 new cases of fistulae of the dura mater. With reference to these 13 cases, and to the literature, they propose a classification according to the type of drainage of the fistula: direct, into a dura mater lake, into a cortical vein. This clasification enables a better clinical and radiological approach to these anomalies.