Fig. 2

Axial HRCT of the temporal bone demonstrates diffuse and symmetric destruction of the bilateral temporal bone. The ossicular chains remain intact (arrow in a). Both of the posterior SCCs are completely destructed (arrowhead). The smallest bone stapes are still in good condition even if they are surrounded by LCH tissue (arrow in b). Axial CT scan also shows the erosion of the frontal bone and squama (c)