Figure 1.

Sagittal post contrast T1 weighted images of (A) Initial presentation with a large enhancing soft tissue mass arising from the left nasopharynx (yellow arrows) with long segment encasement of the distal left cervical ICA (blue dashed line) up through the skull base, and extending intracranially into the left middle cranial fossa (red arrow) (B) immediately following chemoradiotherapy and (C) ten months following initial radiotherapy demonstrate recurrence in the left middle cranial fossa centered over the foramen ovale (yellow arrows). Note interval development of relative hypoenhancement within the left nasopharynx (red arrows) immediately anterior to the ICA (blue dashed line).