Figure 3.

A, B) MRI Brain. A) Sagittal T1 shows large AVM nidus in thalamus and hypothalamus with sparing of the midbrain. B) Axial T2 shows unilateral nidus centred on the deep grey-matter structures. Note also cerebromalacia at left occipital pole (arrow). C) Left ICA angiogram (lat) shows full extent of nidus. Note extension along optic nerve (arrow) and choroidal blush (arrowhead). D) Left external carotid angiogram (lat) shows maxillofacial component of vascular lesion. E) CT of the head on bone windows. Note the hypoplasia of the left maxillofacial skeleton.