Chronic otomastoiditis


Chronic otomastoiditis (COM) should be considered a separate entity from acute otomastoiditis, and is thought to be primarily due to Eustachian tube dysfunction as demonstrated in this case secondary to enlarged nasopharyngeal adenoids. 

Chronic otomastoiditis (COM) is persistent or recurrent inflammation of the middle ear and mastoid air cells lasting for a minimum of 12 weeks.

The term encompasses a number of conditions: