364 , Veterinary Medicine. 



None of these are very dangerous to the host unless they block 

 the gall ducts, or induce infective inflammation in their coats. 



PARASITES OF THE PANCREAS. 



Same intestinal round worms invade pancreatic and biliary ducts. 

 Cysticercus cellulosa in dog and pig. Cause obstruction, inflammatory and 

 infectious disorders. Treatment. 



These are either encysted parasites, or the parasitic denizens of 

 the duodenum which have made their way into the pancreatic 

 duct. 



The cysticercus cellulosa has been found in the pancreas of the 

 dog, and may be present in the pig as well. 



The sexually immature Sclerostoma Equinum (strongylus 

 armatus) has also been found encysted in the gland, and being a 

 parasite of the colon had doubtless made its way by penetrating 

 through the walls of that viscus. 



The ascaris megalocephalus has been found in the pan- 

 creatic duct, having penetrated from its normal habitat in the 

 duodenum. The invaded duct was dilated and considerably 

 thickened (Generali). 



The ascaris suilla has invaded the pancreatic duct of the pig, 

 from it's normal home in the duodenum. (Railliet and Morot.) 



According to their numbers, these may create more or less 

 change of structure and function of the gland, and they may in- 

 troduce microbes, to cause catarrhal, calculous and other infec- 

 tions. Their presence, however, has never been recognized by 

 definite symptoms during life, and treatment has never been 

 possible. 



PARASITES OF THE SPI.EEN. 



Parasites wander into the spleen, as into the liver, from the intestines, 

 through the portal blood ; others bore through the tissues. Linguatula 

 denticulata, in man and dog. Cysticercus cellulosa, in man and pig. Cysti- 

 cercus tenuicollis, on peritoneal surface. Echinococcus, in substance, in 

 man, herbivora and omnivora. Distoma hepaticum, in cow. CEsophagas- 

 toma Columbiana: Usually calcified, in sheep. Actinomycosis, extend- 

 ing to or from other viscera. Symptoms not pathognomonic ; intelligent 



