SYMPTOMS 



185 



ilank are often enlarged and hard. Sometimes this condition 

 can be diagnosed positively by a rectal examination and the 

 discovery of the hard, nodular masses. Tuberculosis of the 

 liver does not give rise to obvious symptoms unless the dis- 

 ease is far advanc- 

 ed, in which case 

 jaundice may be 

 observed. 



In animals in 

 which the post- 

 pharyngeal lym- 

 phatic glands are 

 enlarged from tu- 

 berculosis, the 

 breathing is harsh 

 and noisy. In this 

 condition there is 

 sometimes difficul- 

 ty in swallowing, 

 and particles o f 

 chewed up food are 

 occasionally expel- 

 led from the mouth, 

 either voluntarily 

 when it is found 

 that they cannot be 

 swallowed conven- 

 iently, or by the 

 coughing they oc- 

 casion upon reach- 

 ing the pharynx. 

 These enlarged 

 glands may some- 

 times be detected 



by palpation accomplished by placing one hand on each side 

 of the throat above the larynx and then pressing from op- 

 posite sides. 



Fl&. 32. Dorsal aspect of bovine lungs, {a-a^) 

 right and left caudal lobes, [b-b^] r. and I. ven- 

 tral lobes, [c-c^] first and second right cephalic 

 lobes, (^=) left cephaliclobe, {e) trachea, {x x) 

 region most frequently involved in the earliest 

 stages of pulmonary tuberculosis. The lesions 

 at this stage are usually embedded in the lung 

 tissue {Smith). 



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