TUMORS. 



By DR. WILLIAM HERBERT LOWE, 



Superintendent of the United States Xeat Cattle quarantine Station for the port of New 



York, Garfield, X. J. 



Tumors are noninflammatory new growths due to increased nutrition. 

 They may be superficial or deep seated, external or internal. From a 

 pathological point of view there is a great variety of tumors, both benign 

 and malignant, but in this chapter it is my purpose to describe only the 

 more common ones that affect animals of the bovine species. One of 

 the most frequent and troublesome tumors of the nonmaliguant class 

 in cattle is the epidermic, commonly known as the wart. Warts consist 

 of a thickening of the epidermis, or outer skin, produced by accumula- 

 tion of its scales, with hypertrophy of the papilke of the true skin. 

 These growths generally occur in young animals and are frequently 

 seen upon the under surface of the abdomen, the mammary glands, the 

 genitals, lips, and eyelids. Their removal is not attended with danger; 

 their seat should be cauterized immediately after removal, to prevent 

 their return. They may be removed with caustic, by excision, by tor- 

 sion, or by the ligature, the method being determined by their size, con- 

 formation, and location upon the animal. 



T\\ejibroma or fibrous tumor is nonmaliguant, and is principally com- 

 posed of developed connective tissue. It is usual to see tumors of this 

 class in parts where there is much fibrous tissue. They vary greatly in 

 size; sometimes they are as small as an ordinary wart, and on the other 

 hand fibrous tumors have been removed that were many pounds in 

 weight. A fibrous tumor develops slowly and no pain or tenderness is 

 likely to be detected unless the tumor should bo accidentally bruised or 

 otherwise injured. The tumor is generally hard and has a rounded form 

 and may be contained in a wall of areolar tissue, but occasionally it is 

 soft. This variation is principally due to the age of the tumor and tho 

 time in which it has been developing. The fibroma is not by any means 

 a dangerous tumor; it acts mainly as an inconvenience, the degree of 

 which depends upon its size and location. However, they often become 

 very large, but they have few vessels and little hemorrhage is likely 

 to follow their removal with a knife. Fibrous tumors are often due to 

 imprisonment of pus in the deep seated muscular structures, which may 

 arise from undue pressure of some kind, or from bruises. Intelligent 

 and prompt treatment will in the majority of eases be followed by grat- 

 ify ing results. In the early stages iodine may be applied externally or 

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