As mastoid complications may be mentioned: suppurative mastoiditis, leading to destruction of the bone, mastoid fistula, and sub-periosteal mastoid abscess.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson
In some cases the pus escapes into the external auditory meatus by perforating its posterior wall; in others a sinus forms on the inner side of the apex of the mastoid, and the pus burrows in the digastric fossa under the sterno-mastoid-Bezold's mastoiditis.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson
Now if this tube swells so much that it entirely closes, as so often happens in cases of "cold in the head" as well as in constant irritation from adenoids, then may follow a vast train of difficulties-earache, mastoiditis, etc.
"The Mother and Her Child"
William S. Sadler Lena K. Sadler