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Term:
Parent Terms Term With Siblings Child Terms
absent tympanic membrane  
tympanic membrane perforation  
tympanic membrane retraction  
a condition in which a segment of the tympanic membrane (eardrum) collapses inwards towards the middle ear space and lies more medially (deeper) than its normal position; the retracted segment is often known as a retraction pocket

Synonyms
Exact Synonyms: eardrum retraction ;   retracted eardrum ;   retracted tympanic membrane
Definition Sources: http://allearseducation.org/resources/Tutorial-10-Retractions.pdf, https://en.wikipedia.org/wiki/Tympanic_membrane_retraction

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