Fig 1.

Selected MR images through the head and orbits obtained at initial presentation, 3 years before histologic diagnosis.

A, Sagittal T1-weighted postcontrast image shows abnormal homogeneous enhancement extending posteriorly from the sella, along the clivus (single arrow). There is a 2.5-cm enhancing epidural mass seen at the level of the torcula (double arrows).

B, Axial T1-weighted postcontrast image reveals a focal enhancing epidural lesion displacing the posterior portion of the superior sagittal sinus anteriorly.

C, Axial proton attenuation-weighted image through the orbits shows hypointense bilateral intraconal mass lesions.