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Definition of Tympanostomy tube

Tympanostomy tube: A small plastic tube inserted into the eardrum to keep the middle ear aerated for a prolonged period of time. These ventilating tubes usually remain in place for 6 months to several years. Eventually, most will move out of the eardrum (extrude) and fall out into the ear canal. Also called ear tubes.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=6305
Last Editorial Review: 10/30/2013

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