Spetzler-Ponce classification

AVM classification and treatment guide (2010)

Class A

  • Spetzler-Martin score 1 or 2
  • Microsurgical resection is preferred treatment.
  • 8% chance on postoperative deficit (95% CI = 6-10)

    Class B

  • Spetzler-Martin score 3
  • Multimodality treatment
  • 18% chance on postoperative deficit (95% CI = 15-22)

    Class C

  • Spetzler-Martin score 4-5
  • No treatment, with exception of recurrent hemorrhages, progressive neurological deficits, steal-related symptoms, and AVM-related aneurysms.
  • 32% chance on postoperative deficit (95% CI = 27-38)

    Reference

    Spetzler and Ponce. A 3-tier classification of cerebral arteriovenous malformations. Journal of neurosurgery (2010) [Epub ahead of print]