Vols. Videos

Arteriovenous Malformation (AVM)

Last Updated: October 1, 2018

Figure 1: Noncontrast CT (top row) demonstrated a serpiginous region of masslike hyperdensity centered within the left precentral gyrus with adjacent hypodense gliosis. The corresponding MRI images demonstrates a tangle of serpiginous low signal flow voids on T2 (middle row left) with minimal associated anterior contrast enhancement (middle row right). AP (bottom row left) and left lateral (bottom row right) conventional angiographic images demonstrate a large tangle of vessels that has an arterial supply from multiple branches of the MCA and primarily drains into the superior sagittal sinus.

Description

  • Pial vascular malformation of brain with arterial to venous shunting through a central nidus without an intervening capillary bed

Pathology

  • Both sporadic and syndromic forms
  • Dy...