TUBERCULAR MENINGITIS. 



Little seen in cattle. Acute and chronic cases. Miliary tubercles in pia. 

 Hydrocephalus. Progresses slowly. Irritability, hypera^sthesia, photo- 

 phobia, congested conjunctiva, grinding teeth, spasms, squinting, dilated 

 pupils, congested disc, drowsiness, stupor, coma, palsy. 



Tubercle of the eucephalon has been little noticed in the lower 

 animals, partly because it is especially a disease of early life, 

 while animals usually contract tubercle later in life, and partly 

 because subjective symptoms are inappreciable, and the cranium 

 is seldom opened in post mortem examinations. As the af- 

 fection usually appears as a secondarj' deposit, the tubercles else- 

 where go a long way toward identifying the nature of the disease 

 in the brain. It has usually been found consecutive to pulmon- 

 ary tul)erculosis. 



In a case reported by Fi.schoeder as seen at the Bromberg 

 abattoir, in a 350 lbs. calf, the animal had shown weakness, 

 stupor and a tendency to fall toward the right. The brain lesions 

 consisted of small foci of tubercle on the posterior pillars of the 

 fornix (trigone) and adjacent parts. The left eye had on its 

 inner aspect, near the junction of sclerotic and cornea, a firm mass 

 with tubercular centres, extending inward as far as the retina. 

 The bronchial mediastinal, prepectoral, brachial and precrural 

 glands were tuberculous. 



In a case in a cow reported by Lesage there were unsteady 

 gait, impaired vision, and great timidity. Necropsy showed a 

 suboccipital tubercle extending into the frontal sintis and cranium, 

 and invading the brain near the parietal lobe for more than an 

 inch. There were retro-pharyngeal and pleural tubercles as well. 



In a case of Routledge's, with extensive recent exudate, the 

 condition advanced from apparent health to extensive paralysis 

 in three days, while in a case which the author obtained in 

 slaughtering a tuberculous herd no special nervous symptoms had 

 been noticed during life. Much therefore depends on therapiditj' 

 as well as the seat of development. 



The primary lesions in the brain are of the nature of miliarj^ 

 tubercles in the pia mater which becomes congested, rough, gran- 



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