aditus ad antrum


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aditus ad antrum

The recess of the tympanic cavity that leads from the epitympanic recess to the tympanic antrum.
See also: aditus
References in periodicals archive ?
Middle ear infection may spread to the mastoid cells through the aditus ad antrum.
The mass had arisen in the epitympanum, and it extended from the aditus ad antrum to the external auditory canal.
1) that had engulfed the epitympanum with extrusion through the aditus ad antrum into the mastoid air cells.