TUMORS. 223 
entirely. An iodoform dressing with or without drainage should follow. 
We have found no especial efficacy in arsenious acid 3 its so-called specific 
action on sarcomatous elements remains to be demonstrated. If there 
is a relapse, interference must be renewed as early as possible. Sar- 
comas of bones almost always return, even when resection extended be- 
yond the limits of the neoplasm. In the case of small animals affected 
with sarcomas of the legs amputation is advised. A/elanotic tumors should 
be operated upon only when they give rise to functional disturbances, in- 
terfere with deglutition, micturition, defecation, or with the work of 
animals. 
With epitheliomas and carcinomas, radical and early removal is also 
the only treatment likely to arrest the disease ; but interference is to take 
place only when the entire excision of the growth and ganglionary sur- 
roundings is possible. One should remove the neoplasm, the surround- 
ing latent zone of infection, the indurated glands and those that are sus- 
Picious, and also the lymphatic vessels connected with the tumor. The 
excision should always be made freely, including even healthy structure ; 
the edges of the wound should then be brought together by suture and 
an iodoform dressing, with or without drainage, be applied. Ulcerated 
epithelial tumors on the toes of dogs, ordinarily yield only to amputation 
on the metacarpal region ; excision only of the diseased toe is insufficient. 
When total ablation is not possible, it is useful, in some cases, for in- 
stance where there is ulceration, to make a partial excision in order to 
facilitate the cleaning of the wound and relieve the pain (dog), but absten- 
tion is the rule. Interference is always to be forbidden in diffuse cancers, 
enormous multiple growths and in cases when infection is of generalized 
tendency. 
The removal of enchondromas and osteomas should be performed only 
when the disease progresses rapidly and causes functional disturbances. 
Enchondroma of soft parts rarely returns after complete extirpation ; that 
which develops in the superficial layers of bones is scraped off. If there 
is a relapse and the growth affects a bone of a leg, amputation is required 
in the case of small animals. Osteomas which cause no pain or interfer- 
ence are left alone. 
With Zymphadenomas abstention is the rule. The tumor returns in a 
short time or new ones develop in other regions. In supposed cases of 
cures of lymphadenomas by surgical interference, it is probable that the 
ailment had been given a wrong name. Internal arsenical treatment, 
recommended for lymphadenia, is powerless in domestic animals. 
For myomas and neuromas which are painful and interfere with func- 
tions, extirpation must be attempted if not too difficult. Tumors de- 
yeloping on the nerves after neurotomy are not true neuromas, but chronic 
