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

Figure 4

Noncontrast-enhanced computed tomography (CT) and CT myelography. Foraminal stenosis of the left C6-7 intervertebral foramen was identified in the horizontal section ((a, b), arrow). CT myelography showed an intradural extramedullary cyst ((c) sagittal; (d) horizontal, arrow).

(a)

(b)

(c)

(d)