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Figure 2: Unilateral stage III moyamoya: Selective injection of right ICA in frontal view (a) does not show any abnormality. Selective injection of left ICA (b,c) shows short segment occlusion of M1 segment of left MCA with enlarged lenticulostriate collaterals forming distal MCA. Posterior circulation was normal (d). Few ECA collaterals noted reperfusing cerebral parenchyma on selective left ECA injection (e)

Figure 2: Unilateral stage III moyamoya: Selective injection of right ICA in frontal view (a) does not show any abnormality. Selective injection of left ICA (b,c) shows short segment occlusion of M1 segment of left MCA with enlarged lenticulostriate collaterals forming distal MCA. Posterior circulation was normal (d). Few ECA collaterals noted reperfusing cerebral parenchyma on selective left ECA injection (e)