Skull base lesion There is a lytic lesion affecting the occipital bone with an associated suboccipital soft tissue component that is better evaluated on the comparison MRI.There is multilevel degenerative disc disease of the cervical spine particularly of C3-C4, C4-C5, and C6-C7. There is grade 1 retrolisthesis of C3 but we see no gross instability between the flexion, neutral, or extension positions. There is mild multilevel facet joint osteoarthritis and the neural foramina are not well evaluated secondary to suboptimal patient positioning.
1. Multilevel degenerative disc disease and facet joint osteoarthritis of the cervical spine without evidence of frank instability.2. Lytic lesion of the occipital bone which is better appreciated on the comparison MRI imaging.