TUMOBS 107 



maxillary sinuses, and even cranial cavity. In the eye proper 

 they are found upon the choroid and retina. 



5. Testicles. The gland continuously enlarges until even- 

 tually it softens. The same may be said of sarcomata devel- 

 oping in the thyroid, mammary and parotid glands, although 

 in these the growth m.ay also be circumscribed. 



6. Sub-pleural or peritoneal sarcomata are quite common 

 in the dog, horse and ox, but being beyond reach are of no 

 surgical interest. 



7. Melanotic sarcoma. Most commonly met with in the 

 gray horse, but also occur in sheep, ass, dog and ox. They 

 are either solitary, multiple or generalized. They may de- 

 develop almost anywhere, even in bones and muscles, but 

 usually are seen about the anus, vagina and vulva, penis, 

 sheath or tail, about the cheeks, eyes, lips. The metastatic 

 deposits are more frequently seen in the lungs, lymph glands, 

 heart, liver, etc. 



What are the prognostic featv/res of melanotic sarcomata ? 



Even when generalized they do not lead to constitutional 

 disturbances except by reason of their position, as, for 

 instance, one interfering with defecation would sooner or 

 later lead to a fatal colic, etc. 

 Describe the treatment of sarcomata. 



Early extirpation with the knife is essential. After 

 metastatic changes have once established themselves no 

 treatment is of any use. Isolated and hard fibro-melano 

 sarcomata may be successfully removed, as this form of 

 melano sarcoma is of a rather benign type. 



The treatment of sarcomata with caustic, as arsenic, etc., 

 is nonsensical. All cancers, supposed to have been cured with 

 such and similar paste, usually received by some empiric 

 under the promise of secrecy, were of a benign tumor type. , 



