NEOPLASMS OF THE CONJUNCTIVA. 



Pinquecula : fatty growth : Lipoma : Melanoma : Dermoid tumor in 

 young dogs, calves, sheep. Cocainize the part and excise. Cold water : 

 silver nitrate. Polypus. Pterygium. 



A pale fatty looking elevation on the sclerotic at the inner side 

 of the cornea is not unknown in the dog, resembling pinquecula 

 of man. It has not been seen to prove harmful and may be 

 safely ignored. 



Lipoma has also been observed (Miiller) and when trouble- 

 some may be removed by excision with scissors. 



Melanosis is met with in gray horses in connection with the 

 same disease of the skin of the lids, and usually with generalized 

 pigment tumors. In the latter case surgical interference is use- 

 less unless it is to secure a very temporary relief. 



Dermoid Tumor of the Conjunctiva. This consists in a 

 cutaneous product, consisting externally of a mass of epidermic 

 cells, beneath which are connective tissue, fat cells, and muscular 

 fibres, glands and growing hairs. It usually extends inward from 

 the outer portion of the sclerotic conjunctiva and may encroach 

 on that of the cornea. It is firmly adherent to the sclera, and 

 sometimes to the cornea by its base and deeper aspect, but the 

 apex is free and more or less projecting. The color is yellow, or 

 more or less blackened by pigment or even reddened by blood. 



It has been observed, above all, in dogs. Prince reports a case in 

 a calf and Zundel in a sheep. The Cornell Veterinary College 

 clinic has furnished cases in ox and dog. They have, however, 

 nearly always been seen in young animals and are probably 

 congenital. 



These are easily removed from the eye anaesthetized by a 4 per 

 cent, solution of chloride of cocaine. The inner projecting end 

 of the tumor is seized by rat-tooth forceps, and carefully snipped 

 off with sharp scissors curved on the flat. Where adherent to 

 the cornea it must be carefully handled, but where attached to 

 the thicker and more resistant sclerotic it can be dealt with more 

 freely. A pencil of silver nitrate may be used to check the 

 bleeding, or that may be effected by cold water freely applied. 



Polypus, a small, pale, pediculated tumor of the conjunctiva 

 is described by Lafosse and should be removed by scissors, and 

 bleeding checked by cold, wet applications. 

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