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Case 21. Large residual aneurysm.
A and B, Postoperative DSA image (A) and 3D angiogram (B) obtained 6 months after surgery for a posterior communicating artery aneurysm shows residual aneurysm.
C, Posterior 3D angiogram reveals the relationship of the clip, residual aneurysm, posterior communicating artery, and anterior choroidal artery.
