Axial T2-weighted MR imaging at the level of the internal auditory canals, demonstrating a large, homogeneous mass filling the right internal auditory canal and extending into the cerebellopontine angle (between white arrows). Axial T2-weighted MR imaging at the level of the internal auditory canals, demonstrating a large, homogeneous mass filling the right internal auditory canal and extending into the cerebellopontine angle (between white arrows). From Wiggins and Harnsberger (2001). Used with permission. R.H. Wiggins III et al. AJNR Am J Neuroradiol 2006;27:694-699 ©2006 by American Society of Neuroradiology