36 



DISEASES DUE TO PROTOZOA 



hepatic flexure and sigmoid. There are also firm nodules surrounded 

 by dilated vessels, which later become ulcerated. 



The remains of the submucosa is thickened, also the muscular coat. 





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The liver is fatty, perhaps congested ; there may be one or more 

 abscesses. For details, see article on Liver Abscess. 



SYMPTOMATOLOGY. 



Acute amoebic dysentery. 



Onset is usually sudden, pain in the lower abdomen often severe, 

 much griping and straining at stool, stools up to thirty per diem with 



