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Male patient presented 3 weeks back with frontal lobe acute cerebral bleed with interventricular extension who under went follow up CTA which revealed lobulated Acomm (Anterior communicating artery) saccular aneurysm measuring 6.1 x 6.8 x 8.3 mm with neck measuring 3.5 mm.
Normal variant of the ACA noted which shows absence of the left A1 segment and the origin of both A2 segments from a single, unilateral right A1 segment
Another normal variant in this case is fetal origin of the posterior cerebral artery