Study note
ENT
Cholesteatoma and Chronic Otitis Media
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
•
CSOM
is characterized by ear discharge and a permanent perforation.
Permanence of the perforation
•
A perforation becomes permanent when its edges
are covered by squamous epithelium and it does not heal spontaneously.
•
A permanent perforation resembles an epithelium-lined fistulous track.
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