Hello and welcome to e health forum.
The report provided is incomplete and does not give a complete details.
But the limited information, given indicates that there is a mild hypertrophy of soft tissues at the level of C3 -C4 vertebrae.
This is probably compressing the nerves at that level and this might be the cause of your symptoms of difficulty in neck mobility and pain in the lower neck.
You might consult a spine surgeon for a examination and proper treatment.