142 SWINE PRACTICE 



be prevented by the proper treatment or disposal of dogs as recom- 

 mended under eclimococcosis. 



Pancreas 



Little is known concerning the diseases of the pancreas. A con- 

 dition known as multiple fatty necrosis occurs in swine and is thought 

 to be the result of obstruction to the outflow of pancreatic juice. Sar- 

 comas involving the pancreas in swine have been observed, but they 

 were evidently not primary in that organ. 



Peritoneum 



Defects in the formation of the peritoneum are not common. 

 Rarely cystic inclusions or exclusions maj^ be observed. 



INJURIES 



The peritoneum is occasionally injured in swine. The injuries 

 may be inflicted during a surgical operation or they may be pro- 

 duced accidentally. The result of injury of the peritoneum varies 

 with the location and the extent and nature of the injury; which 

 may consist of a bruise of the peritoneum, in which case there is a 

 local inflammatory disturbance; a puncture of the peritoneum, re- 

 sulting in general peritonitis ; or a laceration of the peritoneum, 

 permitting eventration. 



The results of violence from the external surface are self-evident, 

 but- the injuries may be inflicted by foreign bodies in the alimentary 

 canal. In such cases there is more or less digestive derangement and 

 local or general peritonitis. 



Treatment. — Medicinal treatment may be applicable when the peri- 

 toneum is intact, but, in lacerations of the peritoneum surgical inter- 

 ference alone is of value. 



ASCITES 



Ascites is a condition resulting from the accumulation and re- 

 tention of excessive quantities of lymph or diluted lymph in the peri- 

 toneal cavity. The peritoneal cavity is in reality a large lymph 

 space. 



Ascites is very rare in swine. 



Etiology. — Ascites is caused by an excessive outpouring of lymph 

 into or a diminished absorption of lymph from the peritoneal cavity. 



