Mccabe b sadé j and abramson m.
Attic retraction pocket cholesteatoma.
A recurrent cholesteatoma is a new cholesteatoma that develops when the underlying causes of the initial cholesteatoma are still present.
A retraction pocket seen in the attic or posterosuperior quadrant of a tympanic membrane is the hallmark of an acquired cholesteatoma.
Granulation tissue may arise from the mucosa adjacent to the cholesteatoma figure 6c.
Skin material often accumulates in this pocket and becomes infected causing drainage and potential severe complications.
Stratified squamous epithelium may also be present in the middle ear as other clinical or pathological entities such as metaplastic islands of the mucosa in chronic ears with central perforations.
The cyst slowly erodes bone and can cause facial paralysis hearing loss dizziness and if left untreated can slowly erode into the brain cavity.
Eustachian tube theory.
Retraction pockets a retraction pocket is an invagination of the tympanic membrane.
It is hypothesized that blockade of the tympanic isthmus causes isolation of the attic and the adjacent middle ear spaces and that subsequent building up of the negative pressure in these spaces results in retraction of the pars flaccida leading to formation of attic retraction pockets and cholesteatomas.
Persistent negative pressure in the attic region causes invagination of pars flaccida causing a retraction pocket.
To examine this theory computerized tomographic ct findings of these conditions were evaluated in a series of 53 ears with retractions of the pars flaccida attic retractions.
There has been significant bone erosion of the ear canal wall above the eardrum.
Often there is an accumulation of squamous debris within the pocket figure 6a b.
Pathophysiology toss theory of invagination.
Go to top a skin cyst caused by a long standing retraction pocket of the eardrum into the middle ear.
An attic cholesteatoma is defined as an epidermoid cyst found in the attic.
1 attic retraction pocket cholesteatoma is clearly visualized white arrow.
Invagination of the tympanic membrane of the attic to form retraction pockets to be filled with desquamated epithelium and keratin to form cholesteatoma.
In cholesteatoma first international conference.
1977 the significance of the retraction pocket in the treatment of cholesteatoma.
Common organisms to infect this keratin debris are psuedomonas e.
This retraction pocket becomes later filled with desquamated epithelial debris which forms a nidus for the infection to occur later.
Eds aesculapius publishing company birmingham alabama pp.
This is the most common and widely considered as the main reason for cholesteatoma.
This is a serious condition.
