TUMORS 109 



they are not very juicy, wMte, rather dense and homogenous ; 

 the consistency is greater than the surrounding tissue ; the 

 regional lymph glands are invariably involved, especially 

 seen in the epitheliomata originating from the skin or mucous 

 membranes of the head (submaxillary lymph glands). 



Name the seats of predilection. 



Any mucous or cutaneous surface, as the skin, mucous 

 membranes of the vagina, bladder, mouth, pharynx, penis, etc. 



Describe the cylindrical-celled epithelioma. 



This springs from the cylindrical surface epithelium of 

 mucous membranes, and shows no "cell nests." The walls of 

 the diseased organs exhibit infiltrating indurated masses, 

 which ulcerate early. It is composed of masses of epithelial 

 cells, and a fibrous tissue stroma in which columnar cell lined 

 tubular glands rest. 



Name the seats of predilection. 



The mucous membranes of the intestines, uterus and 

 stomach. 



Describe the acinous -celled carcinoma^ 



Depending on the amount of fibrous tissue present, it may 

 be soft or hard. In the former, the so-called encephaloid 

 cancer, the cellular element predominates; while in the latter, 

 or scirrhous, the fibrous framework predominates. This also 

 explains the rapidity of their growth, the soft one developing 

 much more rapidly and ulcerating earlier than the scirrhous 

 type. 



The acinous carcinoma originates only in the glandular 

 epithelium. The hard cancer, as its name indicates, is a hard, 

 tuberous growth at first movable with the gland ; later, by 

 infiltration, the surrounding tissue becomes immovable, as it ■ 



