This case illustrates a cerebral arteriovenous malformation with:
- compact nidus located in an eloquent area (adjacent to the right precentral gyrus - motor cortex) - 1 point
- small, measuring less than 3.0 cm - 1 point
- superficial venous drainage - 0 point
Which scores as a grade 2 according to the Spetzler-Martin AVM graduation system.
Note that in these case, both the CT and MRI angiograms were able to spot the vascular malformation with great confidence when compared to the DSA.