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Figure 1: (a) Left internal carotid artery injection shows a giant posterior circulation aneurysm which on vertebral artery injection (b) appeared to be arising from left P1–P2 region and showed delayed filling and persistence of the contrast (c), distal P2 and cortical branches of left side are not seen (d), so loose packing of the aneurysm along with parent vessel occlusion done (e). Arrow in (e) pointing toward coils in parent vessel and vertebral artery injection oblique view (f) showing filling of residual proximal P1 segment

Figure 1: (a) Left internal carotid artery injection shows a giant posterior circulation aneurysm which on vertebral artery injection (b) appeared to be arising from left P1–P2 region and showed delayed filling and persistence of the contrast (c), distal P2 and cortical branches of left side are not seen (d), so loose packing of the aneurysm along with parent vessel occlusion done (e). Arrow in (e) pointing toward coils in parent vessel and vertebral artery injection oblique view (f) showing filling of residual proximal P1 segment