580 PRINCIPLES OF VETERINARY SURGERY 



that is movable and non-adherent to the adjacent tissues. It is less sensi- 

 tive than the first named variety, but shows a manifest inclination to increase 

 slightly in size and to grow more sensitive, probably owing to the constant 

 friction caused by movements of the parts. This variety has an obscure 

 oiigin and will often develop in spite of asepsis. The fact is, they occur 

 most frequently after the operation that was followed with absolutely prompt 

 union of the cutaneous incision. — L. A. M. 



TUMORS OF MUSCULAR TYPE. 



I. MYOMA. — The myoma is a tumor formed by the 

 muscular tissue. There are myomata of non-striated mus- 

 cle and those of striated muscle. (Fig. 82). The former 



a 



Fig. 87. 



Lymphadenoid Tumor, ss. Fine Reticulum Circumscribing Little Alveoli 



Some of which Still Enclose Their Cell While Others are Empty, the 



Cells Having Been Dislodged by Filaments, b. Isolated 



Cells. 



may be found in the uterus, oesophagus, the stomach., the 

 intestines, and, in short, in any part having non-striated 

 muscular tissue. They are benign tumors that provoke 

 disturbance only by mechanical obstruction. They rarely 

 suppurate or mortify. 



COMPLEX TUMORS. 



Complex tumors are those formed of different tissues, 

 without evidence of the tissue primarily concerne.d in the 

 elaboration of the tumor. They are known by the names 

 of teratomata, mixed tumors, congenital tumors and tumors 

 with numerous tissues. Most of them are cystic. 



