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Figure 1 : Spine MRI showing synovitis of atlanto-odontoid joint and an anterior epidural collection at C1-C2 level narrowing the foramen magnum and upper cervical spinal canal. There was a compression of the cervical medullary junction with diffuse soft tissue enhancement around the C1-C2 joint.
Figure 2: Cerebral MRI showing thrombosis of the right sigmoid sinus and the internal jugular venous.
Figure 3: Spine MRI performed after one month of treatment showing total regression of the anterior epidural collection at C1-C2 level with persistent synovitis of atlanto-odontoid joint.