URO-GENITAL SYSTEM 207 



Lesions. — The abscesses are variable in size and number. In some 

 cases there may be a single abscess, varying in size from that of a 

 pea to that of a hen egg; in other eases there may be a large num- 

 ber of abscesses of variable sizes. One gland may be affected, but 

 in cases of long standing lesions the abscesses are usually found in 

 two or more related glands. The abscesses are usually superficially 

 located. They have a distinct fibrous capsule. The pus varies in 

 color from gray to greenish yellow. In lesions of long standing the 

 pus becomes caseous. In some cases the abscesses appear to fuse 

 forming fistulous tracts. 



Symptoms. — These abscesses appear as nodular masses beneath the 

 skin. They are usually dense £ind resistant. In rare instances the 

 abscess wall may become eroded and pus discharge. 



Treatment. — Small superficial abscesses may be dissected out in 

 their entirety without damage to the gland. Large or deep-seated 

 abscesses require destruction of gland tissue and in most cases it is 

 probably advisable to remove the entire gland. The affected ani- 

 mals should be properly restrained and the surgical wounds cared 

 for in the usual manner. 



NECROPHOBOUS MAMMITIS 



This condition is described under the general type of necrobac- 

 illosis. 



BOTEYOMYCOTIC MAM MITTS 



Botryomycotic mammitis occurs in swine, but is not common. The 

 lesions are practically the same as those described for botryomycosis 

 under the heading ' ' Sequels of Castration. ' ' Prognosis should always 

 be guarded in those cases in which the mammary gland is removed, as 

 a large percentage of the animals die. 



ACTINOMYCOTIC MAMMITIS 



Actinomycotic mammitis, in the experience of the writer, is more 

 common in swine than botryomycotic mammitis. Infection occurs 

 through abrasions of the skin surface. This condition is most com- 

 mon in swine that are in pasture in stubble fields. The lesions are 

 the same as lesions of actinomycosis of any soft tissue and consist 

 of a dense surrounding capsule of fibrous tissue inclosing multiloc- 

 ular communicating centers containing a tenacious, granular, 

 creamy-white pus. The actinomycotic tumefaction may become 



