Inclusion Criteria:  Chronic subdural hematoma equal or greater than 10 mm, midline shift equal or greater than 5 mm or neurological symptoms attributable to mass effect. Recent diagnosis or recurrence Surgical treatment performed < 72 hours Informed consent signed by the patient or they responsible family member  Exclusion Criteria:  Advanced disease with life expectancy < 6 months Condition that contraindicated endovascular procedure: Pregnancy, renal failure defined as creatinine clearence < 30 ml/min, allergy to iodinated contrast. Unavailability for follow up st 6 months Patient expressly refuses treatment