ANSWER
The image shows several things. First, there is a well-corticated lucency through the base of the odontoid process. This most likely represents what is referred to as an os odontoideum (congenital spinal variant). The other possibility is that it could be an old odontoid fracture with nonunion.
In addition, there are superior end-plate fractures noted in C6, C7, T1, and T2. However, no definite fracture lines are evident, suggesting these are subacute or old injuries. MRI can be performed to differentiate old versus new fractures; in this case, it was determined these were old.