At the second bottom joint in your neck there is a rupture towards the left back side of your disk that is pressing on your spinal cord as well as the root which is a branch running off the spinal cord out of the neural foramina, and out into your body
"APdiameter of the cord is 7.9 mm. This is consistent with acquired spinal stenosis."
This means the diameter of your spinal cord from the front to the back is 7.9 mm in diameter they seem to think this is a bit narrow spinal stenosis is narrowing of the spinal canal.
"Minimal degenerative changes of the disc at C6-C7"
This usually means some narrowing or drying out of the disk has occurred, this is the bottom joint in your neck.
"Reversal of cervical lordosis is also seen."
This means the curve in your neck is the wrong way instead of being convex to the front and concave at the back it is the other way around.
"Is this serious??"
That a difficult question, what do you think, i would say its potentially serious at least. its possible that in time it will deteriorate all so your age is important
Good luck Carol112231