MRI Findings Of Cervical Spine Shows Small Central Disc Protrusion At C4 And C5 And Minimal Effacement Of Thecal Sac Margin. Meaning?

Question : MRI OF THE CERVICAL SPINE WITHOUT CONTRAST, 7/9/2013 11:50 AM      

CLINICAL INDICATION: Neck pain      

TECHNIQUE: T1 and T2 sagittal. Axial T2 and 2-D merge.      

COMPARISON: none      

FINDINGS:      
The cervical medullary junction and the cervical spinal cord are unremarkable.      
The visualized posterior fossa unremarkable. The cervical lordotic curvature is      
maintained. The visualized spinal canal is widely patent. No intramedullary      
signal abnormality of the cervical cord nor is there extrinsic compression.      
Intervertebral disc spaces are maintained. The vertebral body morphology is      
normal. There is no bone marrow infiltrative process.      

Analysis of the axial images as follows.      

At the C2-C3, a small central disc protrusion is demonstrated 5 mm transverse x2      
mm AP, series 7 image 4. There is minimal focal effacement of the anterior      
thecal sac margin. No contact of the cervical spinal cord. Neural foramina are      
patent.      

At C3-C4, normal.      

At C4-C5, a small central disc protrusion is evident, 8 mm transverse x2 mm AP.      
There is minimal effacement of the anterior thecal sac margin. No contact of the      
cord margin. No foraminal stenosis.      

At C5-C6, C6-C7, and C7-T1, normal.