Figure 1. (a) Axial, (b, c) coronal CT images (bone window) reveal opacification of air cells in right mastoid, middle ear cavity and petrous apex. Bony erosion was demonstrated along the cortex surrounding the petrosal pyramid (arrowheads) and occipital condyle (straight arrows) with widened petroclival fissure (asterisk). Note collapsed right mandibular condyle with destruction (curved arrow).