Figure 1.

Figure 1. Head and neck imaging. Coronal T2 MRI (A) shows a mass extending from the middle cranial fossa through a skull base defect into the right infratemporal fossa. The adjacent normal brain parenchyma is displaced but not involved by the mass, with a clear cerebrospinal fluid (CSF) cleft separating the two. Axial pre-contrast (B) and post-contrast (C) T1 MPRAGE images show minimal enhancement at the center, but the majority of the mass is non-enhancing. Axial diffusion-weighted imaging (D) shows diffusion restriction in the infratemporal mass, suggestive of hypercellularity, a feature often concerning for an aggressive tumor, though this can also be seen in benign lesions. Sagittal T1 SPACE MRI (E) and post-contrast MRA (F) show a prominent vascular pedicle (red arrows) in the center of the mass and the displaced right middle cerebral artery (yellow arrow). 3D renderings of the skull (G) show budging of the squamosal temporal bone and widening of the suture rather than osseous destruction.