XXXIIL— TUBERCULOSIS IN THE CAT. 



Very much less has been written on the history of tuberculosis in 

 the cat than in the dog. The cases hitherto reported are very scanty. 

 I have only found thirty-one in special publications, either French or 

 foreign, and the majority only mention lesions seen on post-mortem 

 examination. Among these are comprised the twenty-two cases seen 

 by Jensen while searching for tuberculosis among cats killed at the 

 Veterinary School of Copenhagen during the thirteen months from 

 November, 1889, to January, 1891, and the three cases previously 

 •collected by Bang, and published in Jensen's article. To these I can 

 add ten other cases seen in the consulting clinique ; in most cases the 

 animals were given up by their owners, and either died of tuberculosis 

 ■or were destroyed. This makes, therefore, a grand total of forty-one 

 observations. 



I have analysed these cases in order to show the relative frequence 

 of the local lesions. The results are as follows : — Changes in the lungs, 

 29 cases ; in the bronchial and mediastinal glands, 10 ; in the pleura, 

 3 ; in the trachea and nasal cavities, i ; in the pericardium and heart, 



1 ; in the intestine, 4 ; in the mesenteric lymphatic glands, 22 ; in the 

 liver, 5 ; spleen, 4 ; peritoneum (mesentery and epiploon), 5 ; kidneys, 

 8 ; testicles, i ; uterus, i ; submaxillary and cervical lymphatic glands? 



2 ; muscles, i ; articulations, 2. Pleurisy was seen in 4 cases, and 

 pericarditis in 2. Four animals showed tuberculous wounds. 



On comparing these figures with those referring to similar lesions 

 in the dog analogies are seen, but also notable differences. In both 

 species the lung is the most frequently affected organ. In the cat 

 lesions of the intestine, mesenteric lymphatic glands, and spleen are 

 ■commoner than in the dog, while lesions of the liver and serous 

 membranes, ascites, pleurisy, and pericarditis are rarer. Nevertheless 

 it must be borne in mind that in a considerable number of cases the 

 animals were killed, and the post-iiwriciii examination only revealed 



