Vividly enhancing T2 isointense mass centred at the left petrous apex/cerebellopontine angle shows bony erosion at the base of the posterior clinoid processes and subtle erosive change also extending to the petrous apex. Mild cortical hyperostosis of the left petrous temporal bone.The porous acousticus is not widened.The left mastoid air cells and tympanic cavity are clear.Partial opacification of the left sphenoid sinus.