Fig. 1.

Cerebral MRI characteristics in patients with COL4A1 mutation involving a glycine of the triple-helix

A: T1- weighted (left) and T2-weighted (right) axial sequences, showing a ventricle asymmetry due to porencephalic cysts in a one-month-old boy (left) and in a three-months-old girl (right) with a congenital hemiparesis. B: FLAIR sequence (left) and time-of-flight magnetic resonance angiography (right), showing a leukoencephalopathy (left) and a left intracranial internal carotid artery aneurysm (right) in a 70-year-old man (B1) and his 35-year-old daughter (B2) with a history of HANAC syndrome.