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A and B, Lateral external carotid artery injection in the early phase shows a sigmoid DAVF type I. Cast of Onyx after 2 Onyx injections: the first by the middle meningeal artery (C) and the second by a branch of occipital artery (D). E and F, Final controls of the external carotid and internal carotid arteries early and late phases show the absence of a residual fistula and satisfactory sigmoid sinus preservation.
