556 



Tuberculosis 



of the mammary gland. These tmnors are usually only slightly 

 movable, round or oval in form, the very large ones usually 

 nodulated, firm, painless and not adherent to the overljdng skin 

 (Fig. 86 and 87). In calves they may be elastic and fluctuating, 

 if incised they evacuate a white creamy pus. In rare cases in- 

 flammatory processes develop in and around these tumors caus- 

 ing them to adhere to the overlying skin, rupture and discharge 

 their contents outwards. There then remains a fistula with 

 pale red granulating borders. Very greatly enlarged Ij^nph 

 glands may interrupt the functions of neighboring organs ; thus 

 enlargement of the glands of the throat may interfere with 

 deglutition or respiration Avhile that of the glands of the axillary 

 region and the groin occasionally produces lameness. 



Fig. 87. Tubei-culosis of tlif sulmiaxillai y, iJiosoapulai- and inguinal lymph glands. 



Tuberculosis of the udder begins with a rather diffuse pain- 

 less induration of one or both posterior quarters without local 

 hyperthermia. The process occasionally spreads to the adja- 

 cent quarters and gradually develops into an exceedingly hard 

 and nodular tumor which may approach the size of a child's 

 head and cause atrophy of the remaining parts of the gland 

 (Bang, Fig. 88). In other instances we may observe, especially 

 after the udder has been milked dry, several nodules, or larger 

 nodes in the otherwise uniformly elastic glandular tissue of 

 one or more quarters of this organ. These tumors are firm, 

 painless, do not show an increased temperature and may exist 

 singly or as a conglomerate mass with nodular surface, affect- 

 ing a part of or an entire quarter. This may cause the teats 

 on one side of the udder to assume an irregular direction and 



