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Table 1:

AVM description

Patient/AVM Clinical PresentationLocation (Lobes)Extension (Parenchymal)Size (ml)Venous DrainageHigh Flow, FistulaSpetzler-Martin Grade
Bleeding 10Frontal 3Cortical 5<6 6Cortical (c) 149I 4
Temporal 4WM 56–10 2    Single 4II 5
    ICH 6Parietal 4Mixed (C+WM) 9>10–20 8    Multiple 10III 6
    IVH 1Occipital 2Intraventr. 1>20 5Deep (D) 2IV 6
    EDH 1Mixed* 5Dural 1Mixed (C+D) 5V 0
    SAH 2Cerebellar 2
Epilepsy 6Dural 1(venous ectasia 9/21 (±f.stenos))
Incidental finding 5
212121/2121219/2121
  • Note:

  • Mixed* indicates extending into more than one lobe; WM, white matter; Mixed (c+wm), located cortical and in the white matter (deep location); Intraventr, intraventricular location; Mixed (c+d), mixed cortical and deep venous drainage; F.stenos, functional stenosis; Spetzler-Martin grades I–V (according to size, location, and venous drainage).