NEW FORMATIONS IN THE HEART. TUMORS. 

 PARASITES. 



Glanders, abscess, cancer, epithelioma, sarcoma, melanosis, myxoma, 

 myoma, tubercle, polypus, nsevus, parasites — echinococcus, cysticercus 

 tenuicoUis, cysticercus cellulosa, trichina, sarcocyst, filaria immitis, 

 strongylus subulatus, stronglyus vasorum. 



ist. Deposits of Glanders. In many cases of glanders and 

 farcy in horses the specific product is deposited in the heart as 

 well as in other internal organs. Such deposits are small but 

 numerous, infiltrating the muscular tissue ; their cut surface is 

 dry, finely granular and of a yellowish white color. 



2d. Abscesses are sometimes formed in the heart from the 

 colonization of microbes from suppurating surfaces. 



3d. Cancer -of the heart has been noticed chiefly in dogs by 

 lyeblanc and Cadiot. It occurs only consecutively to cancer in 

 other parts of the body, yet it has sometimes acquired consider- 

 able dimensions (2 fists Cadiot J and interfered materially with 

 the movements of the heart. 



4th. Epithelioma. In a case of generalized epithelioma in an 

 old w?«r^ the heart was involved (Morot); in another case the 

 pleura were involved with a mass as large as a hen's egg in the 

 right auricle, and others like peas in the ventricle (Weber and 

 Barrier) . 



5th. Sarcoma or small celled tumor is common in the heart 

 of horse and dog. In the horse this has been associated with 

 sarcoma of other viscera, and of the muscular system (Morot), 

 or isolated on the valves of the left heart (Percivall), or apex 

 (Page). In the dog it has been found in the ventricle, left 

 (Bournay), right, (Cadeac). 



6th. Melanosis of the heart has been repeatedly noticed in the 

 horse. Some if not all such cases should be classed with cancers, 

 as these internal deposits of black coloring matter in solipeds, 

 have, in our experience, mostly possessed malignant characters, 

 though they are usually simple tumors as developed in the skin 

 of the horse. These black masses usually project beneath the 

 pericardium or endocardium. 

 478 



