BENIGN TUMORS AND CYSTS. 
351 
A soft papillomata or myxoma consists of products of the 
mucous membrane, and is located on any of the mucous mem¬ 
branes, but especially on those of the mouth and vagina. 
These can be extirpated in the same manner as the soft 
papillomata, provided they are situated in an accessible place. 
Adenoma is an epithelioma and is a new formation or develop¬ 
ment of gland tissue. These tumors vary as the structure of 
the glands vary. Some are racemose and some tubular, depend¬ 
ing on the epithelium which lines the gland. These tumors are 
benign in their nature and exhibit no tendency to return when 
thoroughly removed. Although often mistaken for carcinoma, 
they can be differentiated by noting that in adenoma the cells, 
lining the cavities of the glands, rest on a well-defined base¬ 
ment membrane, which is not the case in carcinoma. As the 
cause of adenoma is some local irritant, the remedy that sug¬ 
gests itself is an operation to remove that irritant. 
Lipoma , or fatty tumor, consists of a quantity of normal fat 
cells closely packed together. They are not very well supplied 
with blood vessels or nerves, and hence this makes their 
removal easier. 
They can be removed by excision, and the sac must be 
broken down and destroyed by the actual cautery or a caustic 
wash. 
Neuromatous tumors are not as frequent in our patients as 
in the human family. Only one set of nerves give us much 
trouble from such attacks—this is the plantar after its division 
in foot lameness. These tumors are of a solid, firm consistency, 
composed of a fibrous stroma with numerous groups of cells 
scattered throughout them. They are found as rounded or oval 
bodies with their long diameter along the course of the nerves, 
movable in transverse but not in long direction. Being a part 
of the nerve, they cause great pain and should be excised at 
once. 
Enchondroma , or cartilaginous tumors, consist of any or all 
of the three kinds of cartilage, hyaline, fibious, and mucoid, the 
favorite seat of these tumors being in the region of the sternum 
