Combined occipital transtentorial and infratentorial supracerebellar approach in the concorde position for the treatment of an arteriovenous malformation in the upper vermis: case report.

With a patient in the concorde position, lying prone with the head flexed and tilted laterally, higher than the heart, it is possible to use both the occipital transtentorial and infratentorial supracerebellar approaches without changing the patient's position. We report the successful treatment with this combined approach of an arteriovenous malformation in the upper vermis supplied by the superior cerebellar artery.