570 PRINCIPLES OF VETERINARY SURGERY 



plied to carcinoma, which is closely related to it. Some 

 authors do not even regard it as a variety of the latter; but 

 simply designate it as an infiltrated epithelioma. (Fig. 77). 

 It is less frequent in the dog and horse than epithelioma, 

 but is emphatically the malignant neoplasm. Its generali- 

 zation has been shown by Morot, Cadeac, et al. Carcinoma 

 justifies prompt surgical intervention. 



CONNECTIVE TISSUE TUMORS. 



I. SARCOMA. — Sarcoma is a tumor constituted by 

 young connective tissue cells. It is often ^'oluminous, globu- 



FiG. 75. 



Cylindrical Epithelioma of the Intestines of a Dog. A. Follicular Cavity. 



E. Epithelial Lining. C. Stroma. 



lar, and presents an adhesive base that is drowned in the sur- 

 rounding tissues. The surface is often the seat of numerous 

 ulcerations, through which suppurating granulations pro- 

 trude. (Fig. 79). In certain cases they are protuberant, 

 movable and have a clear boundary. Their consistency 

 varies with their nature. The embryonic sarcoma is soft; 

 the sarcoma with fusiform cells is firmer; while those con- 

 taining cartilaginous or osseous productions are excessively 

 hard. 



