A mastoidectomy can treat complications of chronic otitis media com com is an ongoing ear infection in your middle ear a cholesteatoma which is a skin cyst can be a complication from these . To reduce incidence of residual cholesteatoma following ear surgery and to reduce the need for second look open mastoidectomy using endoscopic mastoidotomy ten year retrospective chart review of 249 primary cholesteatoma cases 1994 2004 with a minimum follow up of two years the first . Mastoidectomy the mastoid space connects directly with the middle ear space there are important structures in and adjacent to the mastoid including the brain inner ear and facial nerve this makes infections risky and surgery delicate almost any active process like infection or cholesteatoma will involve both spaces. Middle ear therefore ear diseases in the middle ear can extend into mastoid bone why is mastoid surgery done operations on the mastoid may be necessary when ear infection within the middle ear extends into the mastoid most commonly this is a pocket of skin growing from the outer ear into the middle ear known as cholesteatoma. They are a result of severe infections from perforations of the ear drum or are the result of chronic middle ear problems also the ear drum can be progressively pulled down and retracted into the middle ear space the skin of the ear drum then grows inside the middle ear and mastoid to form a cholesteatoma
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