Disease in captive wild mammals and birds : $b incidence, description, comparisonFox, Herbert
Science
Disease in captive wild mammals and birds : $b incidence, description, comparison
Fox, Herbert
Veterinary medicine
The larynx on the other hand is constantly reddened in cases of
pharyngitis and may be the seat of mould colonies. Edema of this
structure is, however, not very common, it being recorded but twice in
birds in association with nearby inflammation and five times in mammals;
in the latter cases three were of acute infectious nature, one was a
tumor and the other osteomalacia. It is common to find the laryngeal and
tracheal mucosa swollen and wet in chronic bone degenerations without
the condition being severe enough to call it edema.
LARYNGITIS.
Acute laryngitis of active catarrhal or purulent nature has been met
five times in mammals and twice in birds while more chronic lesions have
occurred only in the former, four times. Tuberculous laryngitis has been
observed in a cockatoo and a lemur; they are interesting enough to cite.
There are no cases recorded among monkeys despite the large number dying
from the disease; this implies of course that no suspicion of its
existence was had at postmortem but perhaps some would have been
detected had every larynx been subjected to microscopic section. A
citron-crested cockatoo was found when posted to have general miliary
tuberculosis. The bright red rim of the glottis attracted attention and
upon slitting open the organ, pinhead size, sharply outlined yellow
tubercles were found on both sides. A black and white lemur was killed
because of a positive tuberculin test. He was in good condition and
exhibited as his only lesions retropharyngeal lymph nodes with
precaseous miliary nodules and small miliary tubercles on the
epiglottis, true and false vocal chords and in the mucosa of the main
ventricle, each lesion being surrounded by a narrow sharply injected
zone. This seems like a recent double implantation since the
retropharyngeal glands probably do not drain toward or from the larynx.
The larynx has been the seat of only one tumor, a squamous cell cancer
in an Azara’s agouti. The tumor caused ulceration and edema of the whole
mucosa sufficient to produce fatal asphyxia.
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