90 PEmcrPLEs of tetebinaet subgeky 



comata ; otherwise, botryomycosis is quite frequent in the 

 horse ; dogs, again, are more likely to be affected witli car- 

 cinoma, -while actinomycosis is common in the ox. 



Connective Tissue Tumors. 



PIBKOUS TUMOR OR FIBROMA (PLURAL, FIBROMATA). 



What is a fibroma 9 



It is a benignant new-growth composed principally of 

 fibrous tissue. 



What two forms of fibromata are recognized ? 



The hard (fibroma durum) and the soft (fibroma moUe). 



JSow do these occv/r 9 



Either solitary or multiple. 



Describe the hard fibroma. 



It is elastic and hard, movable, and painless on section. 

 It appears glistening, grayish- white ; firm ; blood-vessels 

 scanty and small ; inicroscopically, it is made up of 

 variously arranged fibrous tissue, a few yellow elastic fibres 

 and very few connective tissue corpuscles. 



Describe the soft fibroma. 



It is more or less soft, depending on the amount of 

 fibrous tissue present. It is composed of loose, succulent 

 fibrous tissue. On section, it appears grayish-white, semi- 

 transparent, juicy, glistening. Microscopically, it is com- 

 posed of more or less loose connective tissue, numerous 

 blood-vessels and connective tissue corpuscles. 



What secondary degenerative changes are fibromata subject to f 

 Mucoid change, calcification and ulceration. 



