Foramen magnum meningiomas: concepts, classifications, and nuances.

Foramen magnum meningiomas represent a common histological tumor in a rare and eloquent location. The authors review the clinical presentation, relevant anatomical details of the foramen magnum region, neuroimaging features, the posterior and posterolateral surgical approaches for resection, and outcomes. Based the experiences of the senior author (M.D.C.) and a review of the literature, they introduce the concept of a "surgical corridor," discuss the classification of these tumors, and the nuances of care for patients with these challenging lesions.