Keywords temporal bone cholesteatoma middle ear external auditory canal introduction a cholesteatoma is a cystic mass filled with keratin and lined by stratified squamous epithelium.
Attic cholesteatoma ct.
Cholesteatoma is a destructive and expanding growth consisting of keratinizing squamous.
Ct through the temporal bone demonstrates a soft tissue mass in prussak s space which has eroded the scutum and erodes the ossicles and displaces them medially.
Ct is required for preoperative planning reconstruction of ossicles if needed and to exclude perforation of the bony tegmen.
The attic is just.
Treating a cholesteatoma surgery.
Cholesteatomas appear as regions of soft tissue attenuation exerting mass effect and resulting in bony erosion.
Cholesteatoma is not a neoplasm and can be thought of most simply as skin in the wrong place.
Ct gives information about the relationship to the ossicles tegmen tympani erosion potential membranous labyrinth fistula the facial nerve canal erosions.
If the cholesteatoma has been dry the cholesteatoma may present the appearance of wax over the attic.
This may include a ct scan to see whether the cholesteatoma has spread and which parts of your ear are affected.
The hallmarks of the cholesteatoma on ct scan are based on the presence of one or more of the following.
1 nondependent soft tissue density mass associated with attic mesotympanum or antrum 2 typical location and 3 bony erosion of the middle ear bony walls ie scutum attic wall tympanic spine tegmen sigmoid sinus plate korner s.
It often develops as a cyst that sheds layers of old skin and may.
A cholesteatoma is an abnormal noncancerous skin growth that can develop in the middle section of your ear behind the eardrum.
Although a cholesteatoma is histologically identical to an epidermoid or epidermal.
When findings of the 13 year olds and 13 year olds were combined the commonest site of cholesteatoma was the attic 66 of 128 which is 51 6 followed by extension into mastoid 54 of 128 which is 43 2 subsequently followed by extension into the sinus tympani 33 of 128 which is 25 8.
This case represents mri imaging features of bilateral acquired cholesteatoma with marked diffusion restriction and bone destruction.
Ct is the modality of choice for detailed anatomical structure extension and erosion.
After the cholesteatoma has been taken out your ear may be packed with a dressing.
Ct is the modality of choice for diagnostic assessment of cholesteatomas due to its ability to demonstrate the bony anatomy of the temporal bone in exquisite detail.
The pars flaccida cholesteatoma originates in prussak space and usually extends posteriorly while the pars tensa cholesteatoma originates in the posterior mesotympanum and tends to extend posteromedially.
To remove a cholesteatoma you usually need to have surgery under general anaesthetic.
