138 ENTOZOA FOUND TN MAN. 



ment is evidenced, either because the viscera yield 

 gradually to the pressure and are displaced, or 

 because they become to some extent accustomed to 

 the presence of the tumour, owing to its slow 

 development. 



When the tumour has attained to a certain size, 

 varyuig according to the conditions of the individual 

 case, and presses npon an organ through which the 

 animal fluids or the ahmentary substances pass, such 

 as the urinary organs and the intestines, serious 

 complications and even death may supervene, in con- 

 sequence of the impediment which is presented to the 

 natural course of the contents of these passages. If 

 the healthy function of the organ which is affected is 

 necessary to the existence of the patient, or if the 

 function of this organ cannot be replaced by another, 

 as happens with respect to the kidney, for example, 

 the general health is disturbed, and the patient 

 becomes weak and emaciated. Fever, diarrhoea, and 

 coUiquative sweats come on, and death occurs without 

 its being possible to assign it to any other cause than 

 to the destruction of a function which is necessary 

 for the maintenance of life. 



In other cases, which are undoubtedly more 

 common, some intercurrent affection, pneumonia more 

 often than any other, carries off the patient before 

 the complications just enumerated have made suffi- 

 cient progress to cause death. 



The hydatid cyst is not painful, of itself ; and it 

 is not a rare thing to find, upon making post-mortem 

 examinations of persons who have died from some 

 other disease, cysts which had never been even 

 suspected during the lifetime of the individuals. 



