Synovial Cyst of the Atlantoaxial Joint Removed through a Posterior Intradural Approach

Figure 2

Noncontrast-enhanced magnetic resonance images. In horizontal sections (a, b), cervical disc herniation happened in the same region as the left C5-6 and C6-7 stenoses (arrow). At the C1-2 level, an intradural extramedullary cystic lesion existed in the right side of ventral cervical spinal cord, which severely compressed the spinal cord ((c) sagittal, (d) horizontal, and (e) coronal, arrow).

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