. Diseases of cattle, sheep, goats and swine. Veterinary medicine. 474 NERVOUS SYSTEM. a needle, which are readily discoverable in the superficial layers. Later these caseous deposits become absorbed, the lesions of disseminated en- cephalitis diminish and disappear, while a certain number of vesicles after partial development undergo atrophy and disappear. Before long nothing remains but local atrophic encephalitis caused by the development of the vesicles, and from this time the central symptoms begin to appear. Diagnosis. When the turning movement has developed the diagnosis is generally ea
. Diseases of cattle, sheep, goats and swine. Veterinary medicine. 474 NERVOUS SYSTEM. a needle, which are readily discoverable in the superficial layers. Later these caseous deposits become absorbed, the lesions of disseminated en- cephalitis diminish and disappear, while a certain number of vesicles after partial development undergo atrophy and disappear. Before long nothing remains but local atrophic encephalitis caused by the development of the vesicles, and from this time the central symptoms begin to appear. Diagnosis. When the turning movement has developed the diagnosis is generally easy, but it is more difficult during the first period, when encephalitis alone exists; or at least, it is very difficult at this period to discover whether the symptoms are attributable to encephalitis, meningo- encephalitis, eoenurosis, tuberculosis, or to some injury. Prognosis. The prognosis is grave, and very few animals Fig. 221.—Diagrammatic section of a gid bladderworm {Coenurus cerebralis). a, Normal disposition of scolex ; h, c, d, e, diagrammatic drawing to show the homology between cysticercus and coenurus. (After Railliet.) Ziirn. estimated the cases of recovery in flocks at 2 per cent. In these cases the cysts degenerate and disappear. Treatment. At the present moment there is no really practical curative treatment. The best plan appears to be to trephine the skull and remove the cyst, provided its exact position can previously be determined. That, however, is the great difficulty. Its solution presupposes a perfect knowledge of the central nervous system and of the real purport of any apparent symptoms. On the other hand, in sheep at least, the position of the cyst must always remain somewhat uncertain, because there are generally several, and the symptoms are of a mixed Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectveterin, bookyear1920
