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Figure 3: Computed tomography angiography after 56 months follow-up, arrow showing the patent anastomosis (long black arrow: Anastomotic site; short white arrow: Occipital artery [OA]; long white arrow: Posterior inferior cerebellar artery [PICA])

Figure 3: Computed tomography angiography after 56 months follow-up, arrow showing the patent anastomosis (long black arrow: Anastomotic site; short white arrow: Occipital artery [OA]; long white arrow: Posterior inferior cerebellar artery [PICA])