Endovascular Intervention for Refractory Pediatric Cerebral Venous Sinus Thrombosis.

Background: Cerebral venous sinus thrombosis (CVST) is a rare but potentially morbid disease in the pediatric population, and the optimal treatment is not fully understood. Endovascular intervention for this condition has been rarely reported.
Methods: The Stroke Thrombectomy and Aneurysm Registry was queried for patients aged less than or equal to 18 years undergoing endovascular treatment for CVST in the past 10 years. Clinical charts and radiographic data were retrospectively reviewed. Modified Rankin Score (mRS) at 90 days postprocedure was determined as the primary outcome.
Results: A total of seven patients across five pediatric centers ranging from 7 to 16 years of age were identified with a mean follow-up of 28 months. All had underlying conditions predisposing to CVST. Endovascular intervention was undertaken due to neurological deterioration despite systemic anticoagulation; venous infarct was evident preoperatively in six of seven patients. Mechanical venous thrombectomy was attempted in all individuals, and intrasinus thrombolytic therapy was also performed in three cases. Six patients had favorable outcome with mRS 0 or 1 at 90 days postprocedure; one remained neurologically devastated.
Conclusions: Endovascular treatment by an experienced interventionalist may be safe and effective in severe cases of CVST in children failing frontline therapy. Children with radiographic or clinical progression despite anticoagulation may be considered for endovascular intervention in a timely manner.
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