PANCREATIC NEOPLASMS. TUMORS. 



Often malignant, and secondary. Melanoma in white horse. Carcinoma 

 in mare and dog. Epithelioma. Debility, icterus, abdominal swelling, 

 emaciation. Treatment : laparotomy, or potassium iodide. 



Tumors of the pancreas are quite frequently malignant, and 

 show a preference for the head of the organ. They may be pri- 

 mary but are more frequently secondary. 



In gray horses melanotic tumors are found, in connection with 

 similar formations externally, and especially as age advances. 

 Briickmiiller found them of varying size, from a pea to a hazel 

 nut, scattered through the pancreas and adjacent tissues. 



Gamgee records a carcinoma of the pancreas of a mare. 



Carcinoma is more frequent in this organ in dogs, the neo- 

 plasm having an irregular form, an imperfect line of delimitation 

 from surrounding parts and a hard fibrous stroma enclosing 

 caseous centers, undergoing fatty degeneration. 



Nocard reports an epithelial tumor of the head of the pancreas 

 in a bitch. The animal which had been ill for six weeks was 

 debilitated, emaciated, and icteric, with a marked abdominal 

 swelling, It died two weeks later, and necropsy revealed a 

 whitish sublumbar tumor the size of a large apple, with irreg- 

 ular rounded projections. This pressed on the posterior vena 

 cava, surrounded the vena portse and gall duct and completely 

 •closed the latter. Microscopic examination showed it to be an 

 epithelioma. The liver was undergoing cirrhosis. 



Treatment, usually hopeless, would be by laparotomy. If acti- 

 nomycosis were present give potassium iodide. 



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