Epithelioma: Animals susceptible; accessory causes; symptoms; lesions.
Treatment: Warts and polypi. Actinomycosis: Wounds; abrasions;
infection atria. Symptoms; treatment. Trombidiosis: infected regions;
not compulsory parasite; European and American trombidia; distinct
from chigoe. Symptoms. Treatment.
This has been observed in the cat and the horse, commencing at the angle
of the mouth and doubtless partially determined in the latter animal by
the irritation of the bit.
It is characterized by thickening of the tissues of the lips, in the
form of small irregularly rounded masses, and tending to the formation
of a spreading ulcer. The thickened tissues are invaded, pushed aside
and infiltrated by epithelial or epithelioid cells, which, no longer
confined to the surface as in the natural state, grow in the interior of
the tissues and destroy them.
_Treatment._ The disease has little tendency to cause secondary deposits
in other organs and may often be arrested by local measures. In its
earliest stages it may be arrested by the thorough removal of the
diseased structures with the knife, the resulting deformity being
obviated by bringing the raw edges together by suture, so as to secure
their adhesion, or the actual cautery may be used. The tendency to
irritation from putrefaction products escaping from the mouth may be
counteracted by occasional sponging with a weak lotion of carbolic acid
(1 part to 50 of water) or an ointment of one part of very finely
powdered boracic acid to two parts of simple ointment.
Leblanc has repeatedly succeeded in these cases by the use of chlorate
of potash, locally and generally. The local application may be a
solution of two drachms in four ounces of water, while the dose of the
powder for the horse is 2 to 4 drachms daily.
=Warts and Polypi.= These are common on the outer and even the inner
side of the lips, especially in dogs. They are easily removed by the
scissors, after which their roots should be thoroughly cauterized with a
pointed stick of lunar caustic or chloride of zinc.