286 



DISEASES OF THE LIVER. 



Fig. 127. -A racemose echino- 

 coccns, natural size. (After 

 Leuckart, 1880.) 



present they seldom produce sufficient disturbance to attract attention. 



On the other hand, when numerous they deform the liver, produce 



glandular atrophy, increase the total size of 

 the organ, and lead to the appearance of 

 clearly-marked symptoms. 



The cystic vesicles contain a clear, limpid, 

 transparent fluid, in which float secondary, 

 daughter, or granddaughter vesicles. 



Symptoms. Echinococcosis of the liver 

 has no well-marked symptoms, and is there- 

 fore difficult to diagnose in animals whose 

 liver is deeply seated, and therefore 

 beyond palpation. The signs which may 

 characterise the period of ^penetration of the 

 embryos through the intestine and into the 

 depths of the liver, and which are probably 

 represented by slight colic, vague pain and 

 diarrhoea, usually pass unnoticed. But later, 

 when the liver is extensively invaded ap- 

 petite becomes irregular without apparent 

 cause, animals show intractable diarrhcea, 



general feebleness, dulness, and wasting. 



These symptoms do not j^oint with sufficient clearness to a special 



Fig. 128. — Section through a 

 multilocular echinococcus. 

 X 30. (After Leuckart, 

 1880.) 



%^ ^ 



Fig. 129. — A multilocular echino- 

 coccus from the liver of a steer, 

 natural size. - (After Ostertag, 

 1895.) 



Fig. 130. — A multilocular echino- 

 coccus from the pleura of a hog, 

 natural size. (After Ostertag, 

 1895.) 



