The Extremities 313 



undergo transformation into malignancy. The accompanying pic- 

 ture illustrates a fibro-adenomatous growth which had arisen as 

 a result of chronic irritation, that part of the leg having suffered 

 constant friction from a chain. When removed and examined 

 microscopically it showed evidence of impending malignancy. This 

 case is referred to more fully in the chapter on Neoplasms. 



Symptoms and Diagnosis. As adenoma arises from the glands 

 of the skin, it is intimately connected with the latter. It grows 

 very slowly. Sudden rapid increase in size is to be regarded with 

 suspicion as evidence of malignancy. It is usually rather firm but 

 may be soft in places owing to cystic degeneration. When of long 

 standing its weight may cause it to become pedunculate. Constant 

 licking on the part of the animal may render it sore. , 



Treatment. Early and free removal should be practiced, par- 

 ticularly on account of the possible malignant termination. 



Fibroma. This is a fairly common form of neoplasm about 

 the extremities, particularly in young animals. It usually springs 

 from the skin proper, but sometimes from the subcutis. 



Symptoms and Diagnosis. A tumor of this nature is recog- 

 nized without much diiificulty. It is sharply defined from the sur- 

 rounding parts, has a regularly firm or hard consistence, smootli 

 intact surface, is often pedunculate, and has a slow growth. Its 

 average size is that of a walnut. 



Treatment. Ablation by the ordinary methods is indicated. 



Lipoma, Fat tumors are usually seen in plethoric animals 

 advanced in years. Common seats are the shoulder and inner sur- 

 face of the thigh. 



Symptoms and Diagnosis. Lipomata have a soft consistence, 

 with a dermal covering, and may be round or cylindrical in shape. 

 They are frequently pendulous, one observed by Huidekoper hang- 

 ing from the thigh, having very nearly touched the ground. 



Treatment. These growths are removed in the ordinary way. 



Verruca. This occurs in the form of the familiar wart, which 

 is fairly common in old animals, occurring at almost any part and 

 often multiple. 



Symptoms and Diagnosis. Warts are recognized as smooth 

 hemispherical elevations, sharply defined from the neighboring parts 

 and sometimes pedunculate. Beyond forming a blemish they have 

 little significance. 



