There is a 14.5mm x 14mm x 8mm avidly enhancing mass lesion along the anterior margin of the left petrous apex, demonstrating continuity with the genu of the left facial nerve canal. The lesion causes mild impression on the adjacent left inferior temporal gyrus without definite associated cortical or subcortical FLAIR signal change.
No remote intra- or extra-axial mass lesions, acute haemorrhages or collections. The internal auditory canals as well as the vestibulo-cochlear nerve complexes appear unremarkable. No regions of remote abnormal parenchymal or meningeal enhancement.
Based on the current MRI imaging morphology and the bony change seen on CT, the enhancing mass along the anterior margin of the left petrous apex likely represents an intra-osseous facial nerve haemangioma.