“…1,5,7,13,14,17,34,40 DAVFs have also been reported in the setting of postoperative sinus manipulation, head trauma, and less frequently in the setting of meningiomas. 4,8,12,18,30 Several reports have identified hypercoagulable states in patients with DAVFs, including prothrombotic genes, or acquired hypercoagulopathy associated with malignancy, pregnancy, or infection. 23,25,30,36 However, the prevalence of such states could not be gleaned from case reports, and reported series often included inconsistent case selection, and variable and often limited hypercoagulability surveys.…”