T1/T2 isointense (to grey matter) mass lesion centred in the right Meckel's cave with approximate dimensions of 3 x 1.4 x 2.8 cm (AP x ML x SI) with vivid post contrast enhancement and increased diffusion restriction.
There is extension along inferior and lateral aspect of the right cavernous sinus and through superior orbital fissure into the right orbital apex where the optic nerve is encased. Linear enhancement within optic canal is not as bulky. There is also enhancement and enlargement of the right maxillary division (V2) expanding foramen rotundum with tumour completely occupying the pterygopalatine fossa and contiguous via the petromaxillary fissure with the infratemporal fossa component of the tumour. Inferiorly there is spread along the right mandibular division (V3) with expansion of the foramen ovale.
Enhancing tumour extends along the mandibular nerve, including inferior alveolar nerve at least as far as the mandibular foramen, and the auriculotemporal nerve as it wraps around the back of the mandibular ramus. From here, abnormal tumour extending in an anteroposterior direction is likely involving facial nerve branches. Abnormal enhancing tumour is present at stylomastoid foramen and facial canal. Further enhancement involves right facial canal at geniculate ganglion. The enhancement in infratemporal fossa region and within parotid also encases the right internal maxillary and external carotid arteries.
Thin dural thickening and enhancement along the floor of the right middle cranial fossa extending around the cerebral convexity. There is enhancement and fatty marrow replacement of greater wing of sphenoid and petrous apex on the right.