Study note

Chronic suppurative otitis media and permanent perforation

THE CONTEXT
Chronic suppurative otitis media (CSOM) involves long-standing infection of part or all of the middle ear cleft.

Defining features

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CSOM is characterized by ear discharge and a permanent perforation.

Permanence of the perforation

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A perforation becomes permanent when its edges are covered by squamous epithelium and it does not heal spontaneously.
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A permanent perforation resembles an epithelium-lined fistulous track.
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