In subtotal petrosectomy, the tympanic membrane, the ossicular chain, the posterior wall of the external meatus, and the mastoid air cells
were surgically removed, with blind sac closure of the external meatus.
Further, there was opacification of the right mastoid air cells
, left sphenoid sinus and bilateral frontal sinuses.
Mastoid air cells
totally opacified with resorption of septae and partially sclerosed bone.
The main goals of this technique are to completely eradicate the disease, create a large enough meatus for examination and mastoid air cells
, and provide a self-cleaning epithelized dry cavity, and achieve maximum hearing.2,3 A large enough meatus promotes rapid epithelization of the mastoid cavity and facilitates debridement and postoperative evaluation of the cavity.
A unilocular ZACD appears as radiolucency with well defined borders, while the multilocular type demonstrates numerous small cavities within, which resemble mastoid air cells
. The trabecular variety is basically a multilocular entity with internal bony striations.
In majority of the poorly or acellular mastoid, sclerosis of the mastoid air cells
Due to the cosmetic advantage from their concealed position and direct access to the mastoid air cells
, they also play an increasing role in cochlear implant surgery [1, 2].
The abscess occurs over the mastoid cortex when the infectious process within the mastoid air cells
extends into the subperiosteal space.
There was no enlargement in mastoid air cells
or paranasal sinuses.
1) that had engulfed the epitympanum with extrusion through the aditus ad antrum into the mastoid air cells
. Ossicles were medially displaced with erosion of the malleus and incus body (Fig.
Pneumatization of mastoid air cells
: Role of acquired factors.
The mastoid air cells
were resected, preserving the posterior wall of the external auditory canal.