566 PRINCIPLES OF VETERINARY SURGERY 



certainty that the entire growth is destroyed, owing to the 

 impossibility of appreciating" its exact extent. AVhen neo- 

 plasms are pedunculated they may be extirpated with the 

 ecraseur or elastic ligature. The latter has the advantage 

 of not producing heemorrhage and the disadvantage of being 

 rather slow and of leaving a more or less voluminous, morti- 

 fying mass in contact with the body for some days, and be- 

 sides, when dealing with a house dog, the offensive smell 

 is of no small significance. As a general rule, ablation should 

 be the chosen method. The operation should be preceded 

 by all the precautions recommended for the management 

 of hEcmorrhage. In every case the large blood vessels should 

 not to be divided until they are ligated. The ligation of both 

 the nutrient artery and its co-lateral vein is necessary. Co- 

 pious haemorrhages may also be controlled with the actual 

 cautery. 



Some tumors may be easily enucleated with the fingers 

 after the skin is incised, while in others it may be necessary 

 to dissect away the capsule that surrounds them, and even 

 encroach upon the healthy tissues. AVhen all suspected parts 

 have been extirpated, the wound should be smoothed up and 

 cleansed. The coagulated blood should be removed, but 

 if the operation has been properly performed, antiseptic ir- 

 rigation will be unnecessary. When there is reason to fear 

 infection, a drainage opening is provided at a dependent 

 part for the discharge of pathological products. A protect- 

 ing dressing is then applied and the temperature and gen- 

 eral physiognomy should be watched for possible evidence 

 of suppuration, in which event renewal of the dressings and 

 antiseptic treatment will be essential. 



EPITHELIAL TUMORS. 



I. ADENOMA. — The adenoma is a benign tumor con- 

 structed in the form of a gland. They are rare in the domes- 

 tic animals. They consist of new formations, intermixed 



