302 Surgical Diseases and Surgery of the Dog 



Lucet— Bee. de M6d. V6t6r. 1892, p. 83. 



Nauraux— Rec. de MM. V6t6r. 1888, p. 12. 



P6cns — Journ. de. MM. V6t6t. et de Zootechn. 1894 



Prange— Rec. de M6d. V6t6r. 1844, p. 619. 



Prudhomme — Rec. de M§d. V6t6r. 1844, p. 3^6. 



Raynard — Traits Compl. d. 1. Partur. d. Anlm. Domest. 1, p. 443. 2, p. 302. 



Robb — Journ. Comp. Path. & Ther. 6, p. 281. 



Boell — cited by Fleming In Veter. Obstetrics. 



The Mammary Glands 



TRAUMATIC LESIONS. 



The mammae sometimes suffer contusion, which according to 

 the degree of violence, may result in rupture of a few subcutaneous 

 vessels or intraglandular hemorrhage (hematoma) with destruction 

 of glandular tissue. Such injury may terminate in suppuration. 



Treatment. Slight contusions require no treatment but are 

 best left to natural processes of repair. If suppuration takes place 

 vent must be given to the pus. In severe contusion ablation of the 

 gland may be advisable. 



CONGESTION. 



Towards the end of gestation and during lactation there de- 

 velops a normal turgescence of the parts. This turgescence and 

 also lactation is common in virgin and non-pregnant animals about 

 eight weeks after estrtiation — a sort of mistaken anticipation on the 

 part of Nature. 



Symptoms and Diagnosis. The mammae are hot, tumefied and 

 slightly sensitive to pressure. 



Treatment. Restricted diet, free purgation, and massage of 

 the parts are indicated. 



MAMMltlS. MASTITIS. 



This is an uncommon disease. It generally occurs during the 

 period of lactation shortly after parturition. It is caused by pyo- 

 genic bacteria which probably migrate through the galactophorus 

 ducts to the acini and thence spread through the perilobular lym- 

 phatics. Lucet and Leblanc have found a white staphylococcus 

 present, and Gaucher and Surmont have experimentally injected a 

 pure culture of a white coccus obtained from a case of chronic mam- 

 mitis in a human being and produced subacute inflammation of the 

 gland. One or more glands may be affected and usually the ante- 



