Low- and Intermediate-Grade Lateral Sinus Dural Arteriovenous Fistulas: Factors Affecting the Outcome of Endovascular Treatment over 18-Year Experience in a High-Volume Neurovascular Center

Contralateral sinus severe stenosis or occlusion represents a stronger independent risk factor associated with recurrence and unfavorable outcomes in patients with low- and intermediate-grade LS-DAVFs when the involved ipsilateral sinus was occluded after EVT. For patients with LS-DAVFs, the patency of the contralateral sinus should be considered when making therapeutic decisions.