There is a large fluid collection with air-fluid level in the postauricular soft tissues measuring approximately 4.3 x 2.7 cm. The collection is continuous with the mastoid process. There is complete opacification of the mastoidectomy bowl and dehiscence of the cortex in connection with the soft tissue fluid collection. There is soft tissue thickening and essentially complete occlusion of the external auditory canal. There is associated dehiscence of the posterior wall of the external auditory canal with connection to the mastoid and middle ear cavity. There is demineralization of the body, lentiform process, and long process of the incus. The otic capsule is well mineralized.
There is evidence for prior operative changes related to a right canal wall down mastoidectomy and a left canal wall up mastoidectomy. There is a cochlear implant on the left with the implant lead well positioned within the cochlea. The mastoidectomy bowl and remaining left mastoid air cells are well aerated. The left middle air cavity is well aerated.