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CTA demonstrates an absence of the main trunk of the right MCA with multiple small vessels reconstituting it.
Severe stenosis of the M1 segment of the left MCA.
Fetal origin of right PCA - an absence of P1 segment with a good developed PCom which continues into P2 segment of PCA.
Developmental venous anomaly (DVA) in the right frontal lobe which drains into the right internal cerebral vein.