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re causal agent

Thu Nov 9 13:33:18 EST 1995

Actually it is not Sparganum that causes tumors in dogs, it is 
Spirocerca lupi.  Wil Bailey et al at Auburn showed that Spirocerca 
lupi is associated with sarcomas of the esophagus of dogs that were 
infected with this parasite.  This syndrome is rarely seen, and it is 
my impression that tumors/cancers associated with parasites are rare.
Schistosoma haematobium may be an exception.  This parasite causes 
egg granulomas in various parts of the body, and chronic irritation 
by the eggs might cause cancerous conditions, albeit rarely.  The 
parasite causes sterility and problems in urination, among other 
things, and according to an article published in a medical history 
journal, it may have been in Jerico.  In fact, that author 
essentially said that Joshua destroyed the city and the well 
to prevent spread of schistosomiasis into other parts of the mideast. 
I have seen the book which is under discussion, and based on my 
knowledge of parasites and parasitic diseases of domestic animals, I 
think that her "bubble is a little off center."
A.K. Prestwood

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