All the involved bones show different degrees of expansion, heterogeneous sclerosis and cortical interruptions. The following bones are involved:
- left hemimandible, from just beyond the symphysis to the condylar process
- right maxilla, involving the alveolar process, obliterating and expanding the whole maxillary antrum, and elevating the right orbital floor
- left middle and inferior turbinates
- both sphenoid bones, more on the right, involving the pterygoid processes, greater and lesser wings
- squamous and petrous parts of the right temporal bones
- both frontal bones
- clivus
Previous surgical resections with a deficient sphenoid roof, as well as plate reconstruction at the junction of roof and lateral walls of the right orbit. Wide right frontal craniotomy. Left frontal encephalomalacia. A meningoencephalocele is noted at the junction of roof and left lateral wall of the sphenoid sinus, harbouring gliotic gyri representing the site of an osteo-dural defect with underlying the CSF leak.