MR findings in atypical central skull base osteomyelitis
| Patient (no.) | Abnormal SI in Clivus | Preclival ST Mass | T1 SI in Clivus | T2 SI in Clivus | Postcontrast Enhancement | ST in CS | ST in MC | IC Extension |
|---|---|---|---|---|---|---|---|---|
| 1 | Y | Y | Low | High | Y | N | N | N |
| 2 | Y | Y | Low | Heterogeneous | Y | Y* | Y | N |
| 3 | Y | Y | Low | Heterogeneous | Y | Y* | Y | Y |
| 4 | Y | Y | Low | High | Y | N | N | N |
| 5 | Y | Y | Low | High | Y | Y | Y | N |
| 6 | Y | Y | Low | High | Y | Y* | Y | Y |
Note.—Signal intensity in clivus is compared with that of normal fatty marrow. SI indicates signal intensity; ST, soft tissue; CS, cavernous sinus; MC, Meckel’s cave; IC, intracranial. Intracranial extension implies extension beyond CS or MC, involving dura or brain parenchyma or both.
↵* = associated carotid narrowing or occlusion.