An inflammation of both the antrum and the tympanum, typically a complication of middle ear infection.
From 'antrotympanic' + Greek '-itis' (inflammation). A medical condition name that combines two anatomical terms with the standard inflammation suffix, created in the 19th century.
When an ear infection gets serious, it can spread from the middle ear into the sinus cavity behind it—antrotympanitis is that dangerous double infection that doctors really want to catch early.
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