Actinomycosis of Cattle. 



659 



may appear in a niimber of places and discharge tlieir con- 

 tents, "wliile tlie surrounding skin and subcutaneous connective 

 tissue is swollen and edematous, thus producing conspicuous 

 deformity of the affected region of the bod}^ (in a ease observed 

 by Moussti tlie head had the appearance of the head of a 

 hippopotamus, as a result of diffuse infiltration of the skin 

 and subcutaneous connective tissue of the face and the entire 

 maxillary space). In rare cases the process is arrested spon- 

 taneouslj'', whereupon the tumor gradually recedes, swelling 

 subsides, the tenseness of the surrounding tissue disappears 

 and finally recovery takes place. 



Large tiimors may also occur on the extremities, Liipke observed 

 an infection of the foot beginning in tl:e interdigital space and resulting 

 in a condition resembling elephantiasis. In a similar case reported by 

 Gulyas the leg was enlarged from the middle of the carpus down to 

 three times its natural size, its surface being wrinkled and covered with 

 nodules, the flexor surface of the pastern containing a granulating 

 ulcer as large as a dinner plate. Tlie calloiised subcutaneous connective 

 tissue and the underlying muscles contained numerous nodules ranging 

 in size up to that of a hazelnut, the lymph vessels were much enlarged 

 and numerous nodules were scattered along their course to the sacrum. 

 The popliteal glands formed an extensive eauliflower-like mass. 



Actinomycomata 

 developing in t li e 

 wall of the pharynx 

 or in the neighbor- 

 ing areas will ex- 

 tend into the sub- 

 parotideal region, 

 and interfere with, 

 deglutition. As a 

 result rumination 

 is interrupted, ani- 

 mals take less food, 

 there is more or 

 less salivation, but 

 in spite of this, the 

 general nutrition 

 may not be serious- 

 ly affected for sev- 

 eral months. Res- 

 piratory diflicultie,; 

 are more p r o- 

 nounced, the act of 

 respiration being 

 attended by 1 o u d 



whistling or rat- , i n • n i 



tling sounds which are verv audible when the head is depressed. 

 When the head is extended tumors in the subparotuleal region 

 may be palpated with the fingers either from the exterior or by 

 inserting the hand through the animal's mouth. Anmials may 



Fig. 106. Actinomycosis of tlie Lo\yer Jaw. 



