Fig. 3

DSA. Left CCA injection. Lateral views (e ~ g) and AP views (a ~ d) showing the left MCA enlarged and tortuous, no vein in the late arterial phase and capillary phase; the huge MCA can be seen in the capillary phase (b and e), the vein phase (c and f) and the sinus phase (d and g); multiple lateral striate arteries at the proximal segment of M1, a small vessel (yellow arrow) rising at the distal segment of M1 and another small branch (blue arrow) rising at the proximal M2 segment