Female 26 years old Reason: eval for cervical instability History: cervical and clival abscess. The cervical vertebrae appear slightly demineralized, but we see no focal osteolysis of the spine to suggest osteomyelitis. There are grade 1 retrolistheses of C2, C3, and C4 on extension measuring 2 mm or less. Skull base abnormalities are better seen on CT and MRI studies; although we see destruction of the posterior clinoid process as well as gas density in the soft tissues immediately superior to the anterior arch of C1.
Mild retrolistheses on extension as described above. Destruction of the posterior clinoid process and gas density within the soft tissues superior to the anterior arch of C1 presumably reflect known skull base infection.