Table 1:

Baseline characteristics of patients and DAVFsa

Patient Demographics
Total No. of patients41
Mean age (yr)57.3 ± 13.8
Male/female ratio1.16:1
Clinical presentation
 Asymptomatic4 (9.8%)
 Symptomatic37 (90.2%)
 Headache27 (65.8%)
 Tinnitus21 (51.2%)
 Intracranial hypertension10 (24.4%)
 Hemorrhage7 (17.1%)
 Seizure4 (9.8%)
 Cognitive impairment3 (7.3%)
DAVF locationb
 Transverse/sigmoid sinus21 (48.8%)
 Transverse/torcula8 (18.6%)
 Tentorial7 (16.3%)
 Superior sagittal sinus5 (11.6%)
 Lesser sphenoid wing1 (2.3%)
 Convexity1 (2.3%)
DAVF classification (Cognard)b
 I4 (9.3%)
 IIa8 (18.6%)
 IIb6 (13.9%)
 IIa + b16 (37.2%)
 III7 (16.3%)
 IV2 (4.6%)
 V0 (0%)
Arterial feeders
 Middle meningeal40 (93.0%)
 Occipital38 (88.3%)
 Ascending pharyngeal10 (23.2%)
 ICA (dural branches)7 (16.2%)
 Vertebral5 (11.6%)
 Superficial temporal4 (9.3%)
 Posterior meningeal4 (9.3%)
 Ophthalmic3 (6.9%)
 Davidoff and Schechter3 (6.9%)
 Posterior auricular1 (2.3%)
Venous sinus angiographic featuresc
 Isolated sinus3 (8.8%)
 Functional sinus13 (38.2%)

  • ↵a Values are presented as No. (%) unless stated otherwise. Mean values are presented as the mean ± SD.

  • ↵b Based on the number of DAVFs (n = 43).

  • ↵c Based on the number of DAVFs located at a sinus wall (n = 34).