194 PATHOLOGY 



caused by this parasite is due to local irritation 

 diarrhea, pain, and nausea. Occasionally chorea and 

 convulsions occur. It has been thought that products 

 of this parasite have a hemolytic action, thus causing 

 the anemia. 



Tnia Saginata. This worm passes the larval state 

 in cattle and the adult state only in man. It differs 

 only in size and shape from the solium, and the dis- 

 turbances caused are the same. 



Cysticercus Cellulosae. When the ripe ova of Taenia 

 solium are accidentally swallowed by man he becomes 

 the host for the larval form of the parasite, a much more 

 serious matter than harboring the adult parasite. The 

 results depend upon the number of the ova swallowed 

 and upon the organs upon which they locate. In the 

 muscles they cause soreness and pain; in the eye, pos- 

 sibly blindness; in the brain, various undefined nervous 

 manifestations, all due to the irritation and pressure of 

 their growth. 



ECHINOCOCCUS DISEASE 



This parasite occurs in the larval state in man, the 

 adult stage being passed in the dog, wolf, and fox. 

 The eggs having been swallowed, the embryo parasite is 

 freed in the stomach, penetrates the mucous membrane, 

 and is carried by the blood to the liver, spleen, kidneys, 

 or brain, where it develops an echinococcus cyst, a 

 sac containing fluid and the parasite. The cyst may 



