MORBID ALTERA TICK'S IN THE GENITAL ORGANS. 331 

 CANCEROUS, CARCINOMATOUS, OR SARCOMATOUS TUMORS. 



Cancer of the uterus, and other organs of generation, would appear 

 to be rare in animals, and very few veterinary writers allude to it. Even 

 those observations which have been published have but little interest for 

 the obstetrist, as nearly all of them have no relation to difficult parturi- 

 tion. Some cases, however, have been recorded in which cancer of the 

 cervix uteri has produced contraction of the os, and necessitated opera- 

 tive interference in order to effect delivery ; and one or two instances are 

 noted in which cancerous tumors have elsewhere proved an obstacle to 

 parturition, and even when that act has been accomplished have proved 

 dangerous from the haemorrhage they occasioned. 



When the cancer is situated at the cervix, and the os cannot be dilated 

 by the foetus, then treatment must be directed to effect sufficient dilata- 

 tion for its passage through the canal. In nearly every instance this 

 must be accomplished by free incision of the cervix. 



CONDYLOMATOUS, PAPILLOMATOUS, AND LIPOMATOUS TUMORS. 



These tumors are met with most frequently in the generative organs of 

 the Cow and Bitch, and particularly in the vagina. They seldom prove a 

 serious obstacle to the passage of the foetus. 



They first appear as soft, fungoid, cauliflower-like vegetations, which 

 bleed from the slightest contact, and are readily crushed or deformed. 

 In the Bitch they sometimes completely fill the vagina, and give rise to 

 a constant sanious, and most offensive discharge from the vulva. 



Lipomatous tumors are also most frequently noticed in the vagina of 

 the Bitch ; and in two instances observed by Oreste and Falconio, one 

 tumor was the size of a filbert, the other of a large walnut. 



The general indications for treatment are applicable to these growths. 



FIBROID AND MYOMATOUS TUMORS. 



Fibroids are not at all uncommon in the generative organs, and are 

 frequently the cause of difficult parturition. They have been observed in 

 the uterus and vagina of the Mare, Cow, Sow, Goat and Bitch. 



In structure, it would appear that the fundamental portion of these 

 tumors is composed of connective tissue, which may present the histologi- 

 cal characters of areolar, mucous, or tendinous tissue, the fibres of which, 

 more or less closely interlaced, have connective tissue corpuscles or cells 

 lying between them, and are cemented into a solid mass by an inter- 

 elementary, more or less abundant, amorphous substance that greatly 

 contributes to increase the consistency of the neoplasm, giving it a dull 

 white or nacrous appearance, as if composed of cartilaginous tissue. 

 The connective-tissue corpuscles composing these tumors are sometimes 

 considerably enlarged and hypertrophied, and this is more particularly 

 observed in the fibroids of the uterus. This arrangement has been found 

 to exist in the uterine fibroma of a Cow examined by Ercolani in 1855 ; 

 cartilaginous transformation of the structure has even been detected. 



The fibroids are developed from the submucous or subserous connec- 

 tive tissue, or from the muscular texture of the uterine parietes. When 

 the latter, the tumor is rarely pediculated, but nearly always remains ses- 

 sile. The uterine fibroma of submucous origin is certainly at first 



