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11 Cards in this Set
- Front
- Back
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Acquired cholesteatoma represents ingrowth of ____ through the ____ with deposition of ___ and ____ in the middle ear.
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squamous epithelium, tympanic membrane, cells, keratin debris
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Acquired cholesteatoma forms a mass-like lesion in the middle ear that erodes ____ and ____.
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Ossicles,bone
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Most common type of acquired cholesteatoma?
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Pars flaccida cholesteatoma
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Pars flaccida cholesteatoma begins in _____?
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Prussak's space, therefore eroding scutum
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Pars flaccida cholesteatoma begins in Prussak's space and extends to _____,_______, and mastoid antrum.
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Epitympanum, aditus ad antrum, and mastoid antrum
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Which acquired cholesteatoma begins in the mesotympanum?
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Pars tensa cholesteatomas
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Pars tensa cholesteatomas begin in the mesotympanum, involve the _____, and erode the _____.
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Sinus tympani, ossicles
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Complication include dehiscence of ____?
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Tegmen tympani
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Complication include erosion of labyrinth with creation of ___?
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perilymphatic fistula
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Other complications include ___ nerve palsy and air in the ___.
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Facial, labyrinth
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Acquired cholesteatomas may be bright on ___?
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DWI
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