SPLENIC HYPERTROPHY IN SWINE. 



Causes. This disease appears to be rather frequent in pigs, in 

 connection with high feeding, and more particularly with leuco- 

 cythsemia and lymphadenoma. It is further a complication of 

 tuberculosis and of neoplasms located in the spleen, and of he- 

 patic, cardiac and pulmonary disorder. 



Lesions. In leucocythaemia there is general enlargement of 

 the spleen, and especially of the Paccinian bodies which may 

 attain the size of a pea (Leisering, Fiirstenberg, Bollinger, Sie- 

 damgrotzky, Roll, Ellinger). The total weight of the organ 

 may attain to 5 lbs. (Mathieu"), or 13 lbs. (Goubaux). In a 

 remarkable case recorded by Zell, the organ measured 30 inches 

 in its longest circumference and 20 inches in its shortest. It had 

 an enormous thickening of the capsule and trabeculae which en- 

 closed softened contents in a state of fatty degeneration. 



Symptoms are wanting, as most of the observed cases were only 

 discovered after the animal had been killed for pork. 



SPLENIC HYPERTROPHY IN THE DOG. 



This condition has been less frequently seen in dogs, the recog- 

 nizable causes having been traumatism (Notz), and leucocy- 

 thaemia (Zahn, Forestier, La Forgue, Nocard). Lymphadenoma 

 is another complication (Nocard, Leblanc, Siedamgrotzky, 

 Briickmuller). The spleen has been found to weigh 2 lbs., 

 (Bollinger, Siedamgrotzky). As in other animals the enlarge- 

 ment of the Paccinian bodies has been a marked feature. In 

 other cases the splenic lymph glands are enlarged. 



The symptoms are obscure as in other animals. Yet the pres- 

 ence of white cell blood, with a predominance of eosinophile cells, 

 enlargement of the abdomen, and the detection of a large solid 

 body in the left hypochondrium which proves tender to the touch 

 may prove more satisfactory than in other animals. In certain 

 573 



