114 PEINCIPLES OP VETEEINABY SUEGEEY 



buccal cavity, accompanied wifh early swelling of the regional 

 submaxillary glands. The same refers to those of the pharynx 

 of the dog. They are also seen on the membrana nictitans of 

 the horse and may fill the whole of the orbital cavity, 

 eventually destroying the adjoining bones entering the 

 sinuses. In the horse, dog and ox they are further seen upon 

 the mucous membranes of the vagina, uterus and bladder. 

 The only case of lingual carcinoma was observed in England 

 on a twelve year old cat. 



Describe the acinous carcinoma. 



The mammary gland of the dog seems most frequently 

 involved. They vary in consistency and size, and are mostly 

 painless ; the surrounding parts exhibit cancerous nodules ; 

 the skin may or may not be ulcerated ; the regional lymph 

 glands are usually infiltrated. They may become very hard 

 by calcification or ossification, but may also show fluctuation 

 on account of cyst formations. Those of the testicles lead to 

 a decided enlargement of the glands, thickening of the sper- 

 matic cord, and swelling of the inguinal glands. 



Those of the thyroid gland are of interest. In the horse 

 and dog they develop like a stroma, causing rapid emaciatioa 

 and marasmus. They may attain a large size in the dog, 

 exceeding in the horse the size of a man's head. 



The prostatic carcinoma in the dog, getting the size of a 

 man's fist, is diagnosed by rectal palpation, it leading to con- 

 stipation by obstructing the canal. Those in the dog about 

 the anus are of mushroom or warty-like appearance, and quite 

 common. 



The carcinomata involving internal organs are of little 

 surgical interest, at least from a practical standpoint. Usually 

 multiple and subject to metastasis, involving the pleura, 

 peritoneum, mediastinal glands, etc. 



