FIG 3. Midline sagittal T1-weighted image of cervical spine shows homogeneous extradural mass compressing spinal cord posteriorly. Mass is low in signal and roughly isointense to gray matter. C7 vertebra is compressed and is decreased in signal with preservation of intervertebral disk spaces.

FIG 4. Sagittal T2-weighted image of cervical spine slightly to left of midline better shows preservation of intervertebral disk spaces. Extradural mass is fairly homogeneous and intermediate-to-high in signal. Compression of C7 vertebra with increase in anteroposterior diameter is obvious.

FIG 5. Midline sagittal T1-weighted image with contrast shows heterogeneous enhancement of extradural mass and C7 vertebral body. There is no abnormal enhancement of the spinal cord.