The antrum pyloricum is small and not very distinctly marked.
We found that the tumor did extend from the antrum, into which I could bore my finger easily.
This may be necessary if the anterior wall of the antrum and mastoid process be affected.
It is rarely possible to enter the antrum through its natural ostium.
An inexperienced operator may mistake a large mastoid cell for the antrum and in this way may get into difficulties.
In my opinion, however, it is always wiser in such cases to open the antrum.
The completion of the operation is seldom difficult, as the fistula actually leads into the antrum.
It was somewhat striking that I never observed any trouble, immediate or remote, from these perforations of the antrum.
The operation may be extremely difficult, as the antrum is frequently of small size and very deeply placed.
antrum, therefore, meant originally what is within or inside the earth or anything else.
"a cave or cavity," late 14c., medical Latin, from Greek antron "cave."
antrum an·trum (ān'trəm)
n. pl. an·tra (-trə)
A nearly closed cavity or chamber, especially in a bone.
The pyloric end of the stomach, partially shut off during digestion from the cardiac end by sphincter muscles in the stomach wall.