Diseases of cattle, sheep, goats Diseases of cattle, sheep, goats and swine diseasesofcattle00mous Year: 1920 ACTINOMYCOSIS. G75 of the connective tissue, and, in time, changes in the muscular struc- tures themselves. The tongue shows progressive hypertrophy, and becomes hard, sensi- tive, rigid, and incapable of free movement. As a result the patients first have difficulty in grasping food, then in swallowing their saliva, which dribbles from the mouth, and finally are quite unable to feed themselves. The tongue is enlarged and indurated, and fills the entire cavity of the mouth. Sometimes
Diseases of cattle, sheep, goats Diseases of cattle, sheep, goats and swine diseasesofcattle00mous Year: 1920 ACTINOMYCOSIS. G75 of the connective tissue, and, in time, changes in the muscular struc- tures themselves. The tongue shows progressive hypertrophy, and becomes hard, sensi- tive, rigid, and incapable of free movement. As a result the patients first have difficulty in grasping food, then in swallowing their saliva, which dribbles from the mouth, and finally are quite unable to feed themselves. The tongue is enlarged and indurated, and fills the entire cavity of the mouth. Sometimes it projects beyond the incisors, excoriated and bleeding. On passing the hand into the mouth it is found that the surface is covered with little yellowish or red ulcerated nodules, varying in size from that of a large pin's head to that of a lentil. In eating, the animals seize food between the lips and lift the head high, so as to allow the food to fall between the rows of molars. The motion is very similar to that of a fowl drinking, ACTINOMYCOSIS OF THE PHARYNX, PAROTID GLANDS AND NECK. Actinomycosis may some- times leave the mouth and tongue unaftected and attack the pharjaix, from which it extends in the direction of the parotid glands and external surface of the neck. In these cases, however, the inoculations are more localised than when the surface of the tongue is attacked, and the lesions consist of vegetations, polypi, or actinomycomata. The growths develop on the posterior pillars of the fauces, on the sides of the pharynx, or near the entrance to the oesophagus. They interfere with swallowing, and produce symptoms which are easy to detect and interpret. The lesions may also afi'ect deeper-seated tissues and produce growths in the parotid or subparotid region, or lead to the develop- ment of fistulas in the region of the neck. Most fistulae, however, in X X 2 Fig. 271 —Actinomycosis of the tongue.
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