Presentation
Incidental finding.
Patient Data
Age: 70 years
Gender: Male
From the case:
Arcuate foramen
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Bilateral arcuate foramen with incomplete bony arch on the right and complete bony arch on the left.
Case Discussion
An arcuate foramen is a normal anatomical variant and refers to a bony bridge formed by calcification of the posterior atlantooccipital membrane that covers the groove for the vertebral artery.