The Venereal Tumors of Dogs 831 



Histologically, the tumors consist of large round or polyg- 

 onal cells, which multiply rapidly and push the contiguous 

 tissues aside without their becoming involved in inflamma- 

 tory or other disease changes. 



The disease has been repeatedly transmitted experiment- 

 ally by inoculations in the genital mucosa and other tissues. 



In clinical and experimental cases the neoplasms may not 

 remain confined to the genital organs, but may involve the 

 skin, the lymphatic glands of various portions of the body, 

 the liver, spleen and other glands. 



The treatment is not highly satisfactory unless undertaken 

 early. It consists chiefly of excising the vegetations, along 

 with a small area of the healthy mucosa, after which the 

 edges of the wound should be drawn together with catgut. 



In the male, it may be necessary to divide the prepuce 

 and, in the female, the perineum, in order to reach all the 

 diseased parts. Afterwards, these wounds should be su- 

 tured. It is well to place the animal under general anaes- 

 thesia for the operation, which should be repeated within 

 one to three weeks if necessary, and in some cases cautery 

 may be used. In inveterate cases it may be necessary to 

 amputate the penis and prepuce. Hobday states that the 

 disease may be favorably affected by castration. 



