32S 



\E1II;RK\AK\ I'ATHOLOGY. 



sufficient sliock to dcstniy life.) Adenomata are extended liy 

 means of the h-mph. Varicms combinations of adenomata are 

 common. 



Adeno-Sarcoma. — 'i'his is a tumor composed of adenomatous 

 and sarciimator.s tissue. 1 hese lunicirs are seldom obser\'cd dur- 

 ing life because thev occur in the kidney, and it is not an easy 

 matter to palpate the kidney in the domestic animal unless there 

 is extreme emaciation. 'rhe\' usuallv aftect (July one kidney. 

 Thc\' occur in }oung animals and are most common in the hog 

 althono-li line has been obserxed in a hcirse. These tumors grow 

 ra]))(lly and nmy become \'ery large. Uav reported one tliat 

 weighed ''!.''. kilograms (fio llis.) found in the kidne\- of a hog. 



Renal adenosarcomata usuall}" Iia\-e their origin near the kid- 

 nev pcK'is. The renal tissue is gradualh- displaced l)\' the tumor, 

 and in .-^ome instances the kidne\- tissue is entireh- destroyed as 

 a result of picssure airo[ihy. The tumors arc usual!)- confined to 

 the kidney, but the\- form meta.•^lases, in the lung (thr(")ugh the 

 blood, oi- m tlie sulilumbar lympli nodes (through tlie h'mpli.) 



In gross appearance, these tunKjrs are irregular in outline. 

 They are usually surrounded l'\- a thin fibrous capsule from 

 which fibrous bands project into the tumor di\"iding it into 



if an .\<Ien()-Sar<-oma n( the kidney of a hog, showing the 

 omatou.o tissue betwet-n thf arini and tubules. 



