Small well-defined lesion of the left petrous apex measuring 13 x 11 x 9 mm, eliciting a high signal on T1, T1 fat sat and T2, not attenuated on FLAIR with a peripheral rim of low signal on T2 (haemosiderin). No restricted diffusion or enhancement seen on the postcontrast sequences. No connection with the petrous segment of the ICA on the MRA (source images and 3D).