antrum

Poliantrum, from pollutum antrum, on account of the carcases of men therein buried.

As a result of this free incision, drainage is given to the contents of the tympanic cavity, attic, and antrum.

Macewen, who first described this triangle, gave it as a guide for the exposure of the antrum.

The method of opening the antrum in a straightforward case will first be described.

As soon as the antrum is reached, pus will be seen to ooze through the opening made, especially if it is under tension.