The Abdomen 303 



nor ones. As a rule, the inflammation terminates in multiple 

 abscess formation. Pyemia sometimes follows. 



A rather remarkable case should be mentioned here in which 

 a swelling of the mammary region was observed by Megnin, which 

 upon lancing was found to be due to the presence of a giant strong- 

 yle emerging from the body. 



Chronic mammitis may succeed the acute form but it commonly 

 originates independently of the latter. It occurs as a sclerotic inter- 

 stitial fibrosis with gradual destruction of the glandular tissue. 

 This form will be referred to as Fibroma and it also is believed to 

 be due to irritative action of the white staphylococcus. 



Neither form is to be confounded with simple congestion inci- 

 dent to sudden cessation of nursing by the offspring. 



Symptoms and Diagnosis. In acute mammitis the glands are 

 hot, sensitive, greatly swollen, and edematous, and the milk is 

 replaced by a greyish or purulent matter. There is usually some 

 fever present and also suppression of appetite. The animal lies 

 down frequently and is indififerent to its surroundings. In a few 

 days multiple abscesses form and come to a head externally as dark- 

 red angry-looking foci. These, if not treated may persist as ulcers 

 and fistulae for some time after discharging, healing but slowly. 



Treatment. The offspring must be removed and the remaining 

 healthy glands milked by hand. Hot fomentations must be applied 

 to the part and kept up as long as possible. The best way to carry 

 . out this treatment is to stand the animal over a tub and apply the 

 hot liquid by means of a sponge. Purulent accumulations must, of 

 course, be opened up with a knife. The bowels should also be freely 

 evacuated with purgative doses of epsom salts. 



NEOPLASMS. 



The mammary gland is frequently the seat of neoplasia of both 

 innocent and malignant types. It is believed that in some cases 

 the innocent growths may undergo transition into malignancy. This 

 is particularly true of the adenomatous type of growth, and certain 

 it is that pure chondroma, which is ordinarily non-malignant, may 

 occur (Petit), while on the other hand chondromata are usually 

 associated with sarcomatous, myxomatous, and fibrous tissues, and 

 often osseous elements. The strictly innocent growths consist of 

 fibroma, myxoma, lipoma, adenoma, or very often mixtures of these, 

 and cysts. They are characterized by slow development, freedom from 



