Fig. 1.

Moyamoya syndrome. Right common carotid artery injection, lateral projection (a) and AP projection (b) in a 12-year-old child, who had received radiation therapy at 7 years of age for craniopharygioma after failure of intracystic bleomycin treatment. Total occlusion of the distal internal carotid artery is noted with collateral circulation from extracranial vessels going intracranially. This child suffered a severe stroke as shown in the CT scan (c). AP: anteroposterior, CT: computed tomography.