SPIvENIC HYPERTROPHY IN vSWINE. 



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

 connection with high feeding, and more particular!}' with leuco- 

 C3'thaemia and lymphadenouia. It is further a complication of 

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

 patic, cardiac and pulmonar\' 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 ( I^eisering, Fiirstenberg, Bollinger, Sie- 

 damgrotzky. Roll, EHinger). The total weight of the organ may 

 attain to 5 lbs. (Mathieuj, or 13 lbs. (Goubaux). In a remarka- 

 ble 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. 



SPEENIC HYPERTROPHY IN THE DOG. 



This condition has been le.ss frequently .seen in dogs, the recog- 

 nizable causes having been traumatism (Notz), and leucocythaemia 

 (Zahn, Forestier, Ea Forgue, Nocard). Eyniphadenoma is an- 

 other complication (Nocard, Eeblanc, Siedamgrotzky, Bruck- 

 miiller). The spleen has been found to weigh 2 lbs., (Bollinger, 

 Siedamgrotzky). As in other animals the enlargement 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 



553 



