Diffusion weighted imaging is particularly useful when distinguishing a cholesteatoma from other middle ear masses.
Attic retraction cholesteatoma.
Dead skin cells are normally passed out of the ear but if the eardrum collapses it may create a pocket where the dead skin cells can collect.
8 august 2008 a retraction pocket seen in the attic or posterosuperior quadrant of a tympanic membrane is the hallmark of an acquired cholesteatoma.
The classic case develops from progressively deeper medial retraction of the pars flaccida into the epitympanum attic.
5 ruedi s theory.
It is the only entity that demonstrates high signal intensity on dwi.
A primary acquired cholesteatoma results from tympanic membrane retraction.
However the sequence is prone to artefact and care must be taken how the sequence is performed and interpreted 2.
Clinical practice cholesteatoma diagnosing the unsafe ear 634 reprinted from australian family physician vol.
January 4 2020 by zamira leave a comment.
Post superior cholesteatoma and attic retraction right ear.
There has been significant bone erosion of the ear canal wall above the eardrum.
A cholesteatoma can develop if part of the eardrum collapses.
As this process continues the lateral wall of the epitympanum the scutum is slowly eroded producing a defect in the lateral wall of the.
Eustachian tube theory.
Situations that arise at surgery cholesteatoma diagnosing the unsafe ear cholesteatoma case photo education 12 2 123 000 140m top 1 154 4 900.
There is an attic erosion partially exposing the head of malleus.
Posterior half of drum deeply retracted and this pocket is full of keratin flakes.
Attic retraction pocket cholesteatoma.
You can get a cholesteatoma if the eardrum is damaged through an injury or infection or after any kind of ear surgery.
Often there is an accumulation of squamous debris within the pocket.
This is the most common and widely considered as the main reason for cholesteatoma.
Skin material often accumulates in this pocket and becomes infected causing drainage and potential severe complications.
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.
Invagination of tympanic membrane from the attic or part of pars tensa in the form of retraction pockets lead to the formation of cholesteatoma.
Cholesteatoma case photo education dallas ear insute.
Invagination of the tympanic membrane of the attic to form retraction pockets to be filled with desquamated epithelium and keratin to form cholesteatoma.
