Spetzler AVM grading system

The Spetzler-Martin arteriovenous malformation (AVM) grading system allocates points for various features of intracranial arteriovenous malformations to give a grade between 1 and 5. Grade 6 is used to describe inoperable lesions. The score correlates with operative outcome.

Grading

• size of nidus
  • small (<3 cm) = 1
  • medium (3-6 cm) = 2
  • large (>6 cm) = 3
• eloquence of adjacent brain
  • non-eloquent = 0
  • eloquent = 1
• venous drainage
  • superficial veins only = 0
  • deep veins = 1

Eloquence of adjacent brain

• eloquent brain
  • sensorimotor, language, visual cortex, hypothalamus, thalamus, brain stem, cerebellar nuclei, or regions immediately adjacent to these structures
• non-eloquent brain
  • frontal lobe, temporal lobe, cerebellar hemispheres

Siehe auch:

• Arteriovenöse Malformation
• intrakranielle arteriovenöse Malformationen